How many protons, neutrons, and electrons are in the ion ₃₅Br⁻ with a mass number of 80?
- p=35, n=45, e=36
- p=35, n=80, e=34
- p=35, n=45, e=35
- p=45, n=35, e=46
📝 Detailed explanation
Protons (p) = Atomic number = 35.Neutrons (n) = Mass number - p = 80 - 35 = 45.
Electrons (e) for Br⁻ = p + 1 = 35 + 1 = 36.