Which statement is not correct about fullerene C60?

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It contains 12 six-membered rings and 24 five-membered rings.

Each carbon atom forms three sigma bonds.

The five-membered rings are fused only to six-membered rings.

The six-membered rings are fused to both six and five-membered rings.

answer is A.

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Detailed Solution

C60 (fullerene) looks like a soccer ball and contains 20 six membered rings and 12 five membered rings of carbon atoms. All carbon atoms are equal & they undergo sp2 hybridisation. Each carbon atom form a 3 sigma bond with the other 3 carbon atoms.Six membered rings are fused with both six membered as well as five membered rings while five membered rings are attached only with six membered rings.

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