Answer:
[Ar] 3d10 4s2 4p5 or
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
Explanation:
Bromine belongs to group 17 , with 7 electrons in the outermost shell and 35 electrons overall. Because it has d orbitals, Br can hybrodize to bond with 3 Flourines and have 2 lone pairs of electrons
