Ans : Carbon has three key characteristics:
- Tetravalency: Carbon has a valency of four, which means it may connect with four other carbon atoms or monovalent atoms.
- Catenation: Carbon has an extraordinary tendency for forming bonds with other carbon atoms, resulting in large molecules. This phenomenon is known as catenation.
- Isomerism: Isomers are compounds that have the same molecular formula but various structural formulae and the property is called isomerism.