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Q.

The shape of Buckminster fullerene,  C60, is described as a truncated icosahedron. The number of hexagons surrounding each pentagon in the structure of C60 is_______.
[The structure of icosahedron is given below for your reference.] 

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answer is 5.

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Detailed Solution

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Icosahedron has 20 triangular faces with 12 corners. When each of the corners are cut, 12 pentagonal faces and 20 hexagonal faces result.

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