- Oxidation describes those reactions in which oxygen or the halogens are added to a substance or hydrogen is removed from it.
- Reduction describes those reactions in which oxygen or the halogens are removed from the substance or hydrogen is added to it.
- Oxidation can also be determined when electrons are lost by an atom or a group of atoms.
- Reduction can be determined when electrons are gained by an atom or a group of atoms.
- When an element is oxidised, its oxidation number increases.
- When an element is reduced, its oxidation number decreases.
Oxidation & Reduction always occur together => and we call this REDOX REACTIONS.
At the start of this year around Jan/Feb period, we had actually discussed couple of questions on Redox. Do check out those archives to look at several exam-based questions.
