Question

Question #eb0d3

Answer 1

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"`, where `"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"` for a total of five valence electrons.