Carbon and its Compounds

What is catenation? Explain briefly with respect to carbon.

Why are carbon compounds poor conductors of electricity?

What are homologous series? Give one important characteristic.

Explain the chemical properties of carbon compounds with respect to (i) Combustion, (ii) Oxidation, (iii) Addition reaction, and (iv) Substitution reaction. Give chemical equations for each.

Explain the formation of covalent bonds in carbon with the help of suitable examples. Why does carbon form covalent bonds instead of ionic bonds? Also, discuss the two main properties of carbon that lead to the formation of a large number of organic compounds.