What is oxidation reaction ? Explain it with example.

Explanation

.In which reaction oxygen/electronegative elements is added or hydrogen/electropositive element is remove this type of reaction is known as oxidation reaction...
`2Mg_((s))+O_(2(g))to2MgO_((s))`
`S_((s))+O_(2(g))toSO_(2(g))`
The elements Mg and S are oxidised on account of addition of oxygen to them.
Mg is oxidised by electronegative elements such as `F_(2),Cl_(2)`
`Mg_((s))+F_(2(g))toMgF_(2(s))`
`Mg_((s))+Cl_(2(g))toMgCl_(2(s))`
`2K_(4)[Fe(CN)_(6)]_((aq))+H_(2)O_(2(aq))tounderset("Potassium ferrocyanide")(2K_(3)[Fe(CN)_(6)]_((aq))+2KOH_((aq)))`
Removal of K form potassium ferrocyanide is known as oxidation.