Question

$C—C$ bond length is maximum in

• A. diamond
• B. graphite
• C. naphthalene
• D. fullerene

Answer 1

Answer: (A)

The $C—C$ bond length in $s{p}^3$ hybridisation is greater than $s{p}^2$ hybridisation due to large size of p-orbitals
In diamond $s{p}^3$ hybridisation is present while in graphite, napthalene and fullerene $s{p}^2$ hybridisation is present therefore the $C—C$ bond length is maximum in diamond