Question

Which element is capable of forming long chains by forming single, double, or triple bonds with itself?

Answer 1

The answer is carbon

Answer 2

Catenation is the property by which it can make bonds with other carbon atoms to form long chains. Hence, carbon, with the least diffuse valence shell p orbital is capable of forming longer p-p sigma bonded chains of atoms than heavier elements which bond via higher valence shell orbitals.