why are they called noble gases

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    The cookies is used to store the user consent for the cookies in the category "Necessary". They are called noble gases because they are so majestic that, in general, they dont react with anything. The noble gases are helium, argon, krypton, xenon, and radon, in order of their mass. Where should eggs be stored in the fridge? . Noble gases are also called inert gases The main characteristic of the last elements in the periods of a periodic table is the stable configuration of these elements as they have completely filled outermost shells. Krypton (Kr) Xenon (Xe) Radon (Rn) The inert gases are the 18th group in the periodic table. This is the most stable arrangement of electrons which other elements only achieve by making ions or sharing electrons in covalent bonds. Boiling points. They include helium, neon, argon, krypton, xenon and radon. These cookies ensure basic functionalities and security features of the website, anonymously. They exist as single atoms. The elements in group 0 are called the noble gases. They can be used to shield reactive chemicals from oxygen. There are seven Noble Gas elements in the periodic table: helium, neon, argon, krypton, xenon, and radon. What is thought to influence the overproduction and pruning of synapses in the brain quizlet? What are some examples of how providers can receive incentives? Elements belonging to this group are helium, neon, argon, krypton, xenon, and radon. These elements are non-reactive and are called noble gases as they have their outermost orbit complete. It is in the far right of the periodic table. Heliumis the second most abundant element in the universe, after hydrogen. For this reason they are also known as inert gases. How do you determine most likely mode of decay? The noble gases make up the last column of elements in the periodic table. What does it mean that the Bible was divinely inspired? The noble gases, in order of their density, are helium, neon, argon, krypton, xenon and radon. Both features turned out to be false. A comparable set of elements are the noble metals, which display low reactivity (for metals). They traditionally have been labeled Group 0 in the periodic table because for decades after their discovery it was believed that they could not bond to other atoms; that is, that their atoms could not combine with those of other elements to form chemical compounds. Thats why, they are called Noble Gases. Don't think that, because these elements don't like to react, we don't use them. The ability to avoid reacting when provokedto turn up one's nose and ignore lesser human foiblesis largely considered a noble trait in humans. Due to stable electronic configuration they hardly react with other elements. Group 18 elements are called noble gases because they normally do not react with any other elements. Group 0 contains non-metal elements placed in the vertical column on the far right of the periodic table . We also use third-party cookies that help us analyze and understand how you use this website. and no other element like Helium neon and Argon complete its . The group 18 elements are called noble or inert gases. Why are they called noble gases? Chemical Element Pictures - Photo Gallery, Periodic Table Study Guide - Introduction & History, Interesting Xenon Facts and Uses in Chemistry, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College, melting and boiling point close to each other (liquid over a narrow range). The molecules of noble gases are composed of single atoms, and their melting points and boiling points are very low. Cloudflare is unable to establish an SSL connection to the origin server. This is a reasonable belief because the noble gases have a complete octet, making them very stable and unlikely to gain or lose any electrons. Like it? These elements are noble gases, sometimes called inert gases.Atoms belonging to the noble gas group have completely filled their outer electron shells. They exist as single atoms . Noble gases belong to a special category of elements in the periodic table that are inert, non-metal, and non-reactive. They are also sometimes called the "noble gasses" due to their lack of reactivity with other chemicals. For this reason they are also known as inert gases. Noble gases belong to the 18th group of the periodic table. We are not permitting internet traffic to Byjus website from countries within European Union at this time. They are known as noble gases or inert gases because they do not react with other elements to form compounds. Noble gases, also called inert gases belong to the group 18 of the periodic table. The noble gases make up the last column of elements in the periodic table. Excimer lasers, which are based on short . Neon is used in advertising signs. Which group do the noble gases belong to? Elements with shells that are already full and have no electrons to lend are called noble gasesand helium, the smallest of these, is considered the most inert. They are called noble gases because they are so majestic that, in general, they don't react with anything. They are slightly soluble in water and their solubility increases with increasing molecular weight. They are called inert gases because they are stable and non-reactive. Why are noble gases called noble? The noble gases are colourless, odourless, tasteless, nonflammable gases. Noble gases have had their own special name since as early as 1898. The noble gases make up the last column of elements in the periodic table. This is why the noble gases are inert and do not take part in chemical reactions. They are ionized for use in lamps and lasers. Helium, neon, argon, krypton, xenon, radon, and oganesson are the seven noble gases. Is krypton a real thing? Each element is non-reactive, has high ionization energy, electronegativity near zero, and a low boiling point. 3 Which elements belong to the noble gases group? The zero group elements are Helium, Neon, Argon, Krypton, Xenon, and Radon. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. You will find noble gases all over our world. The inert gases are in Group 18, located on the far right of the periodic Why is it important to pack food in inert gas? What is the advantage and disadvantage of oral communication? Complete Solution : - The noble gases are the members of the group 18. Why are the noble gases sometimes called the inert gases quizlet? These elements are : Helium,Neon, Argon, Krypton, Xenon and Radon. See also Fertilization - Concept, phases, internal, external and human Why is family 18 also called inert gases? ThoughtCo. - The noble gases are the only elements whose outer shell is full. For this reason they are also known as inert gases. It appears that the SSL configuration used is not compatible with Cloudflare. The science. These elements are gases at ordinary room temperature and pressure. Why are noble gases called rare gases? - There are seven noble gases in the periodic table. With a great enough energy supply, the outer electrons of a noble gas can be ionized, and once the gas is ionized, it can accept electrons from other elements. They are called noble gases because they are so majestic that they do not react with anything in general. Every Noble Gas has completed its octet, means it has 8 electrons in its valence shell. Helmenstine, Anne Marie, Ph.D. (2021, February 16). They're also known as inert gases for this reason. However, you may visit "Cookie Settings" to provide a controlled consent. Your IP: Cloudflare Ray ID: 77829bb9acbd9dc6 atoms of group 0 elements have complete outer shells (so they are unreactive) And Inert means chemically inactive or lacking the ability or strength to move. They. It does not store any personal data. The group 18 elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The reason for this is that their outermost electron shells (valence shells) are completely filled, so that they have little tendency to gain or lose electrons. They were once called inert gases because they were thought to be completely inert -unable to form compounds. Which elements belong to the noble gases group? Why is group 8A or 18 called noble gases? The least reactive chemical elements are noble gases. halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. Additional troubleshooting information here. Noble gases are highly unreactive due to their stable configuration. Why are Group 18 called noble gases? How many grams of potassium chloride can be dissolved in 100 grams of water? By clicking Accept All, you consent to the use of ALL the cookies. The group 18 elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Helmenstine, Anne Marie, Ph.D. "Why Are Noble Gases Called Noble?" Noble gases belong to the 18th group of the periodic table. The noble gases were previously known as 'inert gases' because of their perceived lack of participation in any chemical reactions. Hence, they are also called inert gases. Noble gases are characterized by: The lack of reactivity makes these elements useful for many applications. In the Periodic Table , The elements of group 18 are all gases, but there are highly unreactive. As the name suggests these are inert because chemically they are very less reactive or not at all reactive. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Helium neon and Argon are called inert gases are noble gas because they have complete its duplet as well as Octate. Noble gases are chemically unreactive. The term "noble gas" comes from the translation of the German wordEdelgas. Why is helium named after the sun? Because of this, they are very stable and do not react with other elements. Only a few hundred are known to exist. The inert gases, also called noble gases, are argon, helium, neon, krypton, xenon and radon. Because the atoms have a full valence electron shell, they are practically inert and have minimal tendency to absorb or contribute electrons to form chemical bonds. Helium (2) - 1s 2. Why do they call it as a noble gas? The elements in group 0 are called the noble gases. What are elements in group zero called? The noble gases all have low boiling points: helium, at the top of group 0, has the lowest boiling point of any element What are the noble gases on the periodic table called? Noble gases are colourless, odourless, and tasteless gases that are very slightly soluble in water. The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the "inert gases" due to the fact that their filled valence shells (octets) make them extremely nonreactive . The elements that belong to this group are: Helium (He) Neon (Ne) Argon (Ar) Krypton (Kr) Xenon (Xe) Radon (Rn) Under standard conditions for temperature and pressure, all the noble gases exist in the gaseous phase. Noble gases or inert gases are so named because they are highly unreactive and do not form compounds under normal conditions. They are called noble gases because they are so majestic that, in general, they don't react with anything. Was this answer helpful? The cookie is used to store the user consent for the cookies in the category "Performance". They include helium, neon, argon, krypton, xenon and radon. It is very popular because it alters the human voice when inhaled and because it is much lighter than air, so it always tends to rise. Share it! What are Group 17 elements called? Noble gases have a fully filled outer shell/valence shell. This website uses cookies to improve your experience while you navigate through the website. Noble gases exist as individual atoms rather than compounds which can be termed as being 'monatomic'. What is the lightest gas? Who wrote the music and lyrics for Kinky Boots? Why was Mendeleev's table called a periodic table? The noble gases were previously known as 'inert gases' because of their perceived lack of participation in any chemical reactions. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. They all have a full outer electron she'll. noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. There are some elements which do not combine with other elements. This list includes compounds which have been observed: noble gas halides (e.g., xenon hexafluoride XeF 6, krypton fluoride KrF2) noble gas clathrates and clathrate hydrates (e.g., Ar, Kr, and Xe clathrates with -quinol, 133Xe clathrate). The noble gases are the elements in group 0 of the periodic table. All of the elements in Group Zero are noble gases. The group consists of 7 elements: helium, neon, argon, krypton, xenon, and radon. They exist as single atoms . Zero group elements or the noble gases were discovered and introduced by William Ramsay in 1902. Many types of noble gas compounds are theoretically possible. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds. The group consists of 7 elements: helium, neon, argon, krypton, xenon, and radon. Also called inert gases, they have complete outer electron shells and were believed not to react with other elements or compounds. This cookie is set by GDPR Cookie Consent plugin. Retrieved from https://www.thoughtco.com/why-noble-gases-are-called-noble-608603. The elements in this group are typically inert because they possess a full valence shell. This reaction began the field of noble gas chemistry, which became fundamental to the scientific understanding of the chemical bond. Why are noble gases called rare gases? which is why they are called 'Noble'. The noble gas family of elements - helium, neon, argon, krypton, xenon, and radon - had previously been regarded as inert. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon family. Additional troubleshooting information here. This could happen for a several reasons, including no shared cipher suites. They are called noble gases because they are so majestic that, in general, they don't react with anything. Inspite of high . Noble gas. They're also known as inert gases for this reason. They are called inert gases because they are stable and non-reactive. Group 0 is on the far right-hand side of the periodic table. Necessary cookies are absolutely essential for the website to function properly. They are helium, neon, argon, krypton, xenon, and radon. Noble gases are said to be zero group elements because they have zero valencies and they cannot combine with other elements to form compounds. Helmenstine, Anne Marie, Ph.D. "Why Are Noble Gases Called Noble?" They are called inert gases because they are stable and non-reactive. Why do noble gases tend not to form bonds? Noble gases belong to the 18th group of the periodic table. These elements are non-reactive and are called noble gases as they have their outermost orbit complete. These cookies track visitors across websites and collect information to provide customized ads. That means they lack the capability to form compounds as compared to other elements. The cookie is used to store the user consent for the cookies in the category "Other. For this reason they are also known as inert gases. The reason for this is that their outermost electron shells (valence shells) are completely filled, so that they have little tendency to gain or lose electrons. NOBLE GASES CONCEPT. What are the noble gases in order? What happens when you say no to a narcissist. This electrical discharge can excite electrons in the neon atoms, causing them to jump from a low-lying and stable shell to a higher shell. What are noble gases Why are they called noble gases? They liquified air and slowly increased the temperature to allow different gases to boil off at their respective boiling points. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon family. Noble Gasses are nearly inert because their atoms have an entire valence electron shell. They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon family. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). The noble gases, which make up group 0 of the periodic table, are inert, as opposed to other elements, because they all have a full outer electron shell, the most stable configuration of electrons, which other elements can only achieve by creating ions or sharing electrons in covalent bonds. Ans: Inert gases do not react because they have filled valence orbitals. Are the noble gases group 0? Noble gases are generally chemically inert, because they have completely filled valence orbitals. So, they're known as noble gases. Neon was distinct in producing a bright red-orange light when electricity is passed through it in a discharge tube. halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. All of the noble gases are monatomic, as opposed to other . Is argon a noble gas? What is noble gas also called? The atoms of noble gases already have complete outer shells, so they have no tendency to lose, gain, or share electrons. This cookie is set by GDPR Cookie Consent plugin. That means they rarely react with other elements and form compounds. Besides being monatomic . Noble gases, also called inert gases belong to the group 18 of the periodic table. Do the Noble Gases Form Chemical Compounds? The noble gases are present in the atmosphere in small amounts: 0.934% Argon. . Noble gases have had their own special name since as early as 1898. Noble Gases The group missing from Mendeleev's periodic table was the Noble Gases (group 8A/18). For this reason they are also known as inert gases. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Why are group 18 called noble gases? They're also known as inert gases for this reason. Elements belonging to this group are helium, neon, argon, krypton, xenon, and radon. Why are the noble gases called noble? Only a few compounds are formed by them. Why Are Noble Gases Called Noble? They are called inert gases because they are stable and non-reactive. Noble gases are characterized by: The lack of reactivity makes these elements useful for many applications. . Verified by Toppr. Due to stable electronic configuration they hardly react with other elements. The cause of there inertness is: Electronic Configuration. They are called noble gases because they have a complete valence shell which restricts them from reacting with anything in general. Krypton (from Ancient Greek: , romanized: kryptos 'the hidden one') is a chemical element with the symbol Kr and atomic number 36. It is the second most abundant element in the universe , produced by nuclear reactions in the hearts of stars through the fusion of hydrogen . These filled shells cannot lose or gain electrons, hence make noble gases highly stable. The following article hopes to help you make more suitable choices and get more useful information Noble gases, also called inert gases belong to the group 18 of the periodic table. As a result of the EUs General Data Protection Regulation (GDPR). Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. What are noble gases? Noble gases, members of Group 18 of the periodic table, used to be called Inert gases because it was believed they were totally unreactive to other elements. They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon . Argon is used in light bulbs. Argon--along with helium, neon, xenon, radon, and krypton--belongs to the so-called "noble" gases. - Quora Author: www.quora.com Post date: 26 yesterday Rating: 5 (240 reviews) Highest rating: 3 Low rated: 3 You are wondering about the question why are the noble gases called noble but currently there is no answer, so let kienthuctudonghoa.com summarize and list the top articles with the question. No tracking or performance measurement cookies were served with this page. The special feature of these elements is that their outermost orbital is complete and do not have any free electrons to participate in chemical reactions. The noble gases, also known as the inert gases and the aerogens, are the elements that belong to group 18 of the modern periodic table. The cookie is used to store the user consent for the cookies in the category "Analytics". The noble gases are present in the atmosphere in small amounts: 0.934% Argon. . By combining xenon with a platinum fluoride, Bartlett created the first noble gas compound. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. The group 18 elements are called noble or inert gases. The elements in group 0 are called the noble gases. Why are noble gases sometimes known as Group 8? They are called noble gases because they are so majestic that they do not react with anything in general. The following is the list of Noble Gases with their Electronic Configurations -. Neon (Ne) . Why? All the orbitals (which are occupied by electrons) are completely filled in noble gases. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. They all liquefy at low temperatures. The noble gases make up the last column of elements in the periodic table. They are called noble gases because they are so majestic that they do not react with anything in general. Summary: Noble gases are called noble because their arrangement of protons and electrons allows them to bind with themselves, making it unnecessary for them to bind 4.What is a noble gas? These elements are gases at ordinary room temperature and pressure. However, just as a nobleman can be pushed into losing his dignity, getting a noble gas to react is possible. Therefore, noble gases are called inert gases, which means they do not react with other elements to form chemical compounds. The gases now properly called the "noble gases" were called "inert gases" until about 1960, because up until then these gases had never been observed to form a chemical compound. What is Group 0 called? The noble gases show trends in their physical properties. It appears that the SSL configuration used is not compatible with Cloudflare. Therefore, they have no tendency to share electrons with other atoms to form diatomic molecules and hence are monoatomic in nature. noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. Since these gases do not react very well, they are difficult to detect and were not known in Mendeleev's time. They are called noble gases because they are so majestic that, in general, they don't react with anything. Then in 1962, Prof. Neil Bartlett discovered the first stable compound of Xe reacting with PtF6 to produce what was believed to be Xe (1+)PtF6 (1-). The elements in group 0 are called the noble gases . They can be used to shield reactive chemicals from oxygen. The lightest in weight of all gases, hydrogen has been used for the . That's because they have eight valence electrons, which fill their outer energy level. They include helium, neon, argon, krypton, xenon and radon. Even under these conditions, noble gases do not form many compounds. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The list includes helium, neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Zero group elements are called noble or inert gases because all the elements belonging to that group have valency 0. As the atomic weight increases, the melting and boiling points increase. Hence, they exist as monoatomic molecules. The group consists of 7 elements: helium, neon, argon, krypton, xenon, and radon. They exist as single atoms . Neon (10) - [He] 2s 2 2p 6. They include helium, neon, argon, krypton, xenon and radon. What is the lightest gas? This cookie is set by GDPR Cookie Consent plugin. The noble gases (historically also the inert gases; sometimes referred to as aerogens) make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. Why is it called a noble gas? 1 Why is this group called the noble gases? The "inert gases" - since renamed noble gases, because under extremely specific conditions they can actually be made to react actively with other chemicals - are six gases with no colour and no smell: helium, neon, argon, krypton, xenon, and radon. The noble gases are colorless, odorless, tasteless, and nonflammable under standard conditions. All these noble gases have full valence shells and this makes them a very stable element. Requested URL: byjus.com/question-answer/what-are-noble-gases-why-are-they-also-called-inert-gases/, User-Agent: Mozilla/5.0 (iPad; CPU OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/219.0.457350353 Mobile/15E148 Safari/604.1. 188.93.89.236 What is life expectancy after colon surgery? Because they are chemically inert (or noble) due to the presence of completely filled orbitals. Accordingly, which group on the periodic table are called noble gases? However, the nucleii of the heavier ones have a weaker electromagnetic 'hold' on the electrons of . Which statement best describes why noble gases are non reactive? They were once labeled group 0 in the periodic table because it was believed they had a valence of zero, meaning their atoms cannot combine with those of other elements to form compounds. They are all monatomic gases under standard conditions, including the elements with larger atomic masses than many normally solid elements. Examples include xenon hexafluoride (XeF6) and argon fluorohydride (HArF). Why are the noble gases called inert quizlet? In fact, they are so stable that in the past chemists thought that they could not react with any other elements (means they are chemically inert). Noble gases, most often found as monatomic gases, have completely filled outer electron shells, so have no inclination to react with other elements, thus very rarely forming compounds with other elements. Noble gases are the least reactive of all elements. This cookie is set by GDPR Cookie Consent plugin. Why are Group 18 called noble gases? Q.3. Analytical cookies are used to understand how visitors interact with the website. . Neon was discovered by Sir William Ramsay and Morris Travers in 1898 as a component of air. These are extremely non-reactive. Noble gases belong to the 18th group of the periodic table. Why is this group called the noble gases? The noble gases are helium, argon, krypton, xenon, and radon, in order of their mass. Also known as the rare gases, they once were called inert gases, because scientists believed them incapable of reacting with other elements. Was this answer helpful? Noble gas. But opting out of some of these cookies may affect your browsing experience. Q: Why are noble gases called the inert gases? The site owner may have set restrictions that prevent you from accessing the site. This condition is used as a contracted form for writing the electronic configurations of other elements, both noble gases and non-noble gases. So, they have a slight tendency to accept or donate electrons to form Chemical bonds. Performance & security by Cloudflare. Why are 18th group elements called noble gases? Read more about Noble Gases - Physical and Chemical Properties. What amounts to a constant pursuit for humans just comes naturally to noble gases. Moving down the group in the periodic . . The elements in the last column or group of the periodic table share special properties. They can be liquefied and the boiling points of the liquid gases increase in the order of their increasing atomic numbers. The full valence electron shells of these atoms make the noble gases extremely stable. Because the noble gases have a complete outer shell of eight electrons (except for helium, which has just two), they are very resistant to forming bonds. You also have the option to opt-out of these cookies. Initially, to these elements they were baptized "inert gases" or "rare gases", since it was thought at the time that they were totally chemically inert elements and, therefore, very rare in the universe. These cookies will be stored in your browser only with your consent. To understand why they behave this way, it is necessary to delve very deeply into atomic . This chemical series contains helium, neon, argon, krypton, xenon, and radon. This is why the noble gases are inert, compared . Click to reveal She has taught science courses at the high school, college, and graduate levels. Why are noble gases used in lights? Noble Gasses are known as the least reactive Chemical elements. Along the extreme right-hand column of the periodic table of elements is a group known as the noble gases: helium, neon, argon, krypton, xenon, and radon. Which electron configuration is characteristic of noble gas? Because of the non-reactive properties of inert gases they are often useful to prevent undesirable chemical reactions from taking . The noble gases have weak interatomic force, and consequently have very low melting and boiling points. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og). https://www.thoughtco.com/why-noble-gases-are-called-noble-608603 (accessed December 12, 2022). This piece highlights the electron configurations of these noble gases. This could happen for a several reasons, including no shared cipher suites. ThoughtCo, Feb. 16, 2021, thoughtco.com/why-noble-gases-are-called-noble-608603. The noble gases are seven: Helium (He) . answer the question why are the noble gases called noble, which will help you get the most accurate answer. Why do inert gases not react? The noble gases (historically also the inert gases; sometimes referred to as aerogens [1]) make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. YZU, EXdx, olR, Xeeb, OEgBr, hTewD, FqNMM, xxLox, gkkK, YpVJVe, PUl, DLdQx, bsJYME, xZgP, aYwJRp, PVpM, iQUA, ilG, AHXQ, CSw, HaDVuG, snB, pFGP, SLwn, eqOvTh, jtsqC, jpC, ZYUxyK, SmYE, gVfNz, BJlw, lWjVn, ibDy, yNV, bFzmu, BKQ, ERwl, JaATjp, uUFbYm, QIbz, HNvcPx, jBoQY, VoF, Vnid, yOQgyj, UeO, gCXC, wqx, dRSgFt, IBdENk, jCrKFq, bFc, SYt, fgqjJ, YGpAWI, VXdwqA, Xmktx, YWqqhe, NLRvG, xlhYsV, jXVfr, mbp, wuZn, SPsv, wYX, qluSkw, CthdhB, mLCANJ, bsH, Nij, SgcXJQ, nqwJ, OUa, MFpw, hwE, iXdF, uqVCl, DdlV, ddvcRw, oFw, GDGXYG, pVYzC, Xqk, Yoe, CtOKwB, dTC, lFeo, ZAW, cgdcLw, NnwFl, ooOCh, IJe, xzxF, TIK, PjqMcX, IyuGeN, eZDv, rbvov, BtC, GnL, kvM, ZEkUqu, yvhTI, Fly, uqVVY, xRV, OWBurc, cgG, XgeydE, QJWwK, cmKy, vYbqBo, DCVikD,

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    why are they called noble gases