Question

A non metal which is a good conductor of heat and electricity is-

• A. Mercury
• B. Phosphorus
• C. Graphite
• D. Silicon

Answer 1

The correct option is C Graphite

Graphite is an allotropic (allotrope is defined as the different forms of the same element) form of carbon, which is a nonmetal.Carbon has four valence electrons, so it canform four bonds. In graphite, three out of the four valence electrons of carbon atom are used in bond formation while the fourth electron is free to move in the structure. This free electron allows the flow of electricity. Therefore, graphite is a good conductor of electricity.