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.

a )  Iodine is a lustrous non- metals .

 b ) Carbon is the non metal that forms the highest no. of compounds.

 c )  Elements such as  oxygen, phosphorus and sulfur display allotropy.

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