What are the two properties of carbon which lead to the huge number of carbon compounds we see around us?

Explanation

The two properties of carbon which lead to the formation of huge number of carbon compounds are:
(i) Catenation (Self -linking of carbhon atoms of form long chains of carbon atoms).
(ii) Tetravalency (or 4 valency) (Carbon atom having a large valency of 4 can form covalent bonds with a number of carbon atoms as well as with a large number of other atoms such as hudrogen, oxygen, nitrogen, sulphur, chlorine, and many more atoms.