-p-Block elements - I — Chemistry STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
The $C-C$ bond length is maximum in
A
graphite
B
$C_{70}$
✓
diamond
D
$C_{60}$
✓
Answer
Correct option: C.
diamond
c Since carbon in diamond is $sp^3$ hybridized and its $C -C$ bond order is $1$. In graphite and fullerene there is both $C -C$ and $C = C$ in conjugation, hence there is partial double bond character between carbon atoms
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