Answers

2014-10-15T20:51:52+08:00
Nonmetals valence electron = 4, 5, 6, 7
noble gases are always 0
8 4 8
2014-10-16T16:59:32+08:00

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Metals have lesser valence electrons than non-metals while all noble gases have 8 valence electrons except for the helium, which has 2 valence electrons...

--Mizu
16 4 16