Thatbadbleepjay
Answered

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Why is helium lighter than lead? Please someone help !

Sagot :

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Helium has monatomic molecules, and is the lightest of all gases except hydrogen. Helium, like the other noble gases, is chemically inert. Its single electron shell is filled, making possible reactions with other elements extremely difficult and the resulting compounds quite unstable. Helium is the most light gas so I mean you wouldn’t even have to explain if you know it’s the lightest gas
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