p-Block Elements-I 2 Question 5
5. $\mathrm{C}_{60}$ an allotrope of carbon contains
(2019 Main, 9 April I)
(a) 16 hexagons and 16 pentagons
(b) 20 hexagons and 12 pentagons
(c) 12 hexagons and 20 pentagons
(d) 18 hexagons and 14 pentagons
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Solution:
- $\mathrm{C}_{60}$ is aromatic allotrope of carbon containing 12 pentagons and 20 hexagons. It is a fullerene having a shape like soccer ball and called Buckminster fullerene.
