Question

Non-metals are usually poor conductors of heat and electricity.They are non-lustrous,non-sonorous ,non-malleable and are coloured. a) Name a lustrous non-metal b) Name a non-metal which is known to form the largest number of compounds c) Name a non-metal other than carbon which shows allotropy.

Answer 1

diamond is a lustrous non metal.

Answer 2

To become conductor in solid phase require free electrons. Non-metals do not have any free electrons therefore unable to conduct heat and electricity.