Answer:
In a reduction half-reaction the number of electrons an element gains are shown.
Explanation:
Reduction reactions are those reactions in which an atom gains electron (s). In a cell a redox reaction is carried out either utilize electricity or produce electricity. Let suppose a general redox reaction shown below,
A⁺ + B → A + B⁺
For above reaction the reduction half-reaction is as follow,
A⁺ + 1 e⁻ → A
(Hence, in this reaction only the number of electrons an element gain are shown)
And the oxidation half reaction is as follow,
B → B⁺ + 1 e⁻