Question

Looking at the periodic table, determine the number of valence electrons present in Phosphorous (P).(1 point)
Responses

2 valence electrons
2 valence electrons

3 valence electrons
3 valence electrons

4 valence electrons
4 valence electrons

5 valence electrons

Answer 1

5 valence electrons

Explanation: Phosphorus is in group 15 (or 5A) of the periodic table with electron configuration [Ne] 3s2 3p3, giving 3s2 + 3p3 = 5 valence electrons.