Question

why r most carbon compunds poor conductors of electricity??​

Answer 1

Carbon is a tetra valency element which generally forms covalent bond. Due to covalent bonding, it has weak intermolecular force of attraction. It also doesn't follow ionic bonding, where electrons are transferred to form ions (either cation or anion).

For the flow of electricity, free electrons are required. But in covalent bond no free electrons are present, which acts like an insulator. Therefore, most of the carbon compounds are poor conductors of electricity.