Statement (A) : Diamond is hard. Statement (B): Graphite is a good conductor of electricity. Statement (C) : Bromine is a liquid non-metal.

1. A

All the above statements are correct

2. B

All the above statements are incorrect

3. C

A and B are correct but C is incorrect

4. D

A and B are incorrect but C is correct

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Solution:

Due to long tetrahedral chain geometry is present in diamond, it has very hard nature. In graphite, due to ${\mathrm{Sp}}^{2}$ hybridization there is one unpaired electron is present at carbon atom. So, that the electricity is passed through electron in graphite. Bromine is a p block element and it is available in liquid form.

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