# How many valence electrons does bromine have?

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