NEET · Chemistry · STD 11 -p-Block elements - I

Choose the correct statement:

A Diamond is covalent and graphite is ionic.
B 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.

Verified Solution

Answer & Solution

Correct Answer

(B) Diamond is \(s p^{3}\) hybridised and graphite is \(s p^{2}\) hybridized.

Step-by-step Solution

Detailed explanation

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 \(sp ^{2}\).

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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