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Briefly answer the following 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 exists as a liquid at room temperature.
(c). The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
(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.
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