Question

In the reaction between bromine and sodium a bromine atom gains an electron.what ion is formed.is the bromine oxidized,or is it reduced

Answer 1

Br gained electron, so the charge quantity of electron became -36
the charge quantity of proton is still +35
Br⁻ is formed.
oxidization is addition of oxygen.
In this process O²⁻ is formed so the chemical which is oxidized looses electron.
Br gained electron so it is reduced.