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inert gas |
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inert gas, neutral monotomic elements with completely filled outer electron shells. These elements are all gaseous and extremely nonreactive. The inert gases are argon, helium, neon, and radon. Compounds are known for krypton and xenon, so they are no longer considered inert. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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