Question

a)Explain Why graphite can be used as Lubricant but diamond cannot.

b) what do you mean by Homologous series?

c) Why carbon can only form covalent bond?​

Answer 1

Explanation:

a)Because of its softness and non-volatile nature, graphite is used as a lubricant in the fast moving parts of a machinery. ... Diamond, on the other hand, is an extremely hard substance; therefore, it cannot be used as a lubricant.

b)A homologous series is a family of hydrocarbons with similar chemical properties who share the same general formula.

c)Carbon has 4 electrons in its outermost shell. ... Therefore, carbon completes its octet by sharing its 4 electrons with other carbon atoms or with atoms of other elements and forms covalent bond. It forms strong covalent bonds because of its small size