Question #eb0d3

1 Answer
Meave60
Jul 13, 2016

The element is phosphorus, P.

Explanation:

The elements that have five valence electrons are in group 15/VA, which is the nitrogen family. The valence shell electron configuration is "ns"^2"np"^3"ns2np3, where "n"n is the highest energy level, and corresponds to the period (row) number. The element phosphorus, P, is in period 3 and group 15/VA and has a valence shell electron configuration of "3s"^2"3p"^3"3s23p3 for a total of five valence electrons.

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