Non metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Non-metal other than carbon, which shows allotropy is:
sulphur
phosphorus
nitrogen
both A and B
A
both A and B
B
phosphorus
C
sulphur
D
nitrogen
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Solution
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Sulfur has a large number of allotropes, second only to carbon. Some allotropes are rhombic sulphur, monoclinic sulphur, etc.
Phosphorus also has some allotropes like red phosphorus, white phosphorus and black phosphorus.
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