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 exists as a liquid at room temperature.
(c) The allotrpic form of a non-metal is a good conductor of electricity .
(d) Name a non-metal which is known to form the largest number of compounds.
(e) Name a non-metal other than carbon which shows allotropy.
(f) Name a non-metal which is required for combustion.

Explanation

(a) Graphite (Carbon) (b) Bromine (c ) Graphite (Carbon) (d) Carbon (e) Silicon (f) Coke (Carbon).