MCQ
Choose the correct statement:
  • A
    Diamond is covalent and graphite is ionic.
  • Diamond is $s p^{3}$ hybridised and graphite is $s p^{2}$ hybridized.
  • C
    Both diamond and graphite are used as dry lubricants.
  • D
    Diamond and graphite have two dimensional network.

Answer

Correct option: B.
Diamond is $s p^{3}$ hybridised and graphite is $s p^{2}$ hybridized.
b
In diamond each carbon is bonded with four other carbon atoms. So hybridisation of carbon atom is $sp ^{3}$.

In graphite each carbon is bonded with three other carbon atoms. So hybridisation of carbon atom is $sp ^{2}$.

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