Answer:
[tex]^{73}_{35}Br[/tex]
Explanation:
The correct symbol would be
[tex]^{Atomic Mass}_{Atomic Number}Br=^{35+38}_{35}Br = ^{73}_{35}Br[/tex]
The top number is the atomic mass of this form of Bromine. The bottom number is its position on the periodic table. The 73 is a bit light. Usually the weight is closer to 80.
