Question

Why carbon form strong bond with other carbon atoms hydrogen, oxygen, nitrogen and sulphur?

Answer 1

There are four reasons why carbon can form strong bonds with most other elements:-
1) Tetravalency :-  Carbon has 4 valence electrons in its valence shell therefore it  can easily form covalent bonds.
2) Isomerism:-   Carbon can form compounds which have the same molecular structure but different structural formula.
3) Small size:-   Carbon has a small atomic radii therefore the nucleus can hold the shared pairs of electrons firmly.
4) Catenation:- carbon has a unque ability where it can form strong covalent bonds between atoms of itself.

Therefore can form strong covalent bonds. 

Answer 2

carbon form strong bond with carbon hy drogen and other non metal becouse of its catination property