Question

Helium contains the same number of electrons in its outer shell as do the alkaline earth metals. Explain why helium is inert whereas the Group 2 metals are not. 

   Helium contains the same number of electrons in its outer shell as do the alkaline earth metals. Explain why helium is inert whereas the Group 2 metals are not.
Chemistry
Chemistry
Raymond Chang, Jason… 14th Edition
Chapter 21, Problem 38 ↓
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Helium contains the same number of electrons in its outer shell as do the alkaline earth metals. Explain why helium is inert whereas the Group 2 metals are not.
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Transcript

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00:01 This is question 43 from chapter 23.
00:05 And they're asking why helium is inert and the group 2a or alkaline earth metals are not, even though both have the same number of the outer electrons.
00:16 So, yes, even though helium and group 2a metals have an ns2 outer electron configurations, unlike the group 2a metals, helium has a closed shell...
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