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C 60 , an allotrope of carbon contains :

1. 16 hexagons and 16 pentagons.
2. 12 hexagons and 20 pentagons.
3. 18 hexagons and 14 pentagons.
4. 20 hexagons and 12 pentagons.

Correct answer: 20 hexagons and 12 pentagons.

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