EVERYDAY SCIENCE

Detailed explanation-1: -oxidation number, also called oxidation state, the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

Detailed explanation-2: -Oxidation is the process of losing an electrons, while reduction is the process of gaining them. Any chemical that causes another chemical to lose electrons (become oxidized) is called an oxidizing agent.

Detailed explanation-3: -The number of electrons lost or gained by an atom is known as valency.

Detailed explanation-4: –Therefore in the oxidation process (consider the above mentioned example) the zinc element is going to change its oxidation number from zero (0) to +2 and copper is going to change its oxidation number from +2 to zero.-Means in the oxidation process the oxidation number of elements increases.