Question

How many valence electrons does bromine have?

Answer 1

Valence electrons found in the s and p orbitals of the highest energy.

Bromine has an electron configuration of `1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5` the valence electrons are in the 4s and 4p orbitals giving Bromine 7 valence electrons.

I hope this was helpful.
SMARTERTEACHER