Answer :
Simple,
looking at the periodic table..
1s2,2s2,2p6,3s2,3p6,4s2,3d10,4s5
Thus, there are 5 valence electrons in the outer ring of Bromine.
looking at the periodic table..
1s2,2s2,2p6,3s2,3p6,4s2,3d10,4s5
Thus, there are 5 valence electrons in the outer ring of Bromine.