Question

Give an example of a non metal which is a good conductor of heat and electricity

Answer 1

Graphite is an allotrope of carbon (as is diamond). It displays properties of both metals, and nonmetals. However, like a metal, graphite is a very good conductor of electricity due to the mobility of the electrons in its outer valence shells. ... Graphit is a good conductor of electricity.

Answer 2

Graphite is a non-metal which conducts electricity and heat. Because it is a crystalline solid.
it's molecules are in regular fashion.
so .it is a good conductor of heat and electricity.
graphite is used as lubricant in machines as it melting point is more .graphite is an allotrop of carbon.