samadic4onny8pna samadic4onny8pna

25-02-2017
Chemistry

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How many valence electrons does helium need to have a filled outermost energy level?

Respuesta :

eramend1984 eramend1984

27-02-2017

It only needs two. Because, its outermost energy level (1s) is already complete because it has the maximum of two electrons already.

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