Question

6) What is the electron configuration of an atom in its ground state with a

total of seven valence electrons?
A. 1s2 2s2 2p6
B. 1s2 2s2 2p5
C. 1s2 2s2 2p8
D. 1s2 2s2 2p7

Answer 1

Answer: B

2s2 = 2 valence e-

2p5 = 5 valence e-

This will be 7 valence electrons