An allotrope of carbon which exhibits only two types of C-C bond distance of 143.5 pm and 138.3 pm is
A
Charcoal
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B
Graphite
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C
Diamond
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D
Fullerene
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Solution
The correct option is D Fullerene Fullerene is a soccer ball shaped molecule and has 60 vertices with a carbon atom at each vertex. It contains both single and double bond with C-C at a distance of 143.5 pm and 138.3 pm whereas, in diamond C-C bond length is 154 pm and in graphite 140 pm.