Oxidation — জারণ
Oxidation is the loss of electrons — in the classical sense, the gain of oxygen or the loss of hydrogen.
Definition
Oxidation began as the name for combining with oxygen, as when iron rusts or a magnesium ribbon burns with a dazzle. The modern electronic definition is broader: oxidation is the loss of electrons — remember OIL, oxidation is loss. Electrons lost by one species must be gained by another, so oxidation always travels with its partner, reduction. The species that accepts the electrons is called the oxidizing agent, and it leaves the reaction reduced. Losing hydrogen also counts as oxidation, as when ethanol turns to ethanal in the body.
For example
When a magnesium ribbon burns over the spirit lamp, each Mg atom hands two electrons to oxygen: + → — a textbook oxidation.