In a redox reaction, what happens to a substance's charge when it is reduced?

a) it gets more negative

b) it becomes neutral

c) it gets more positive

d) it becomes reactive

The correct option is A.

Redox reaction is a type of chemical reaction in which there is a transfer of electrons among the chemical species involved. In this type of reaction, reduction and oxidation occur simultaneously. In a redox reaction, when a substance is reduced, its charge gets more negative. In redox reaction, a substance is said to be reduced when it gains electrons or decrease its oxidation state.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.