Question

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous and non-malleable.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) Name a non-metal is a good conductor of electricity.
(d) Name a non-metal which is known for its hardness.

Answer 1

(a) Iodine is a lustrous non-metal.
(b) Bromine is a non-metal which exists as a liquid at room temperature.
(c) Graphite is a non-metal and it is a good conductor of electricity.
(d) Diamond a non-metal which is known for its hardness. It is the hardest naturally occuring substance ever known.