Question
$${{C_{60}}}$$, an allotrope of carbon cantains:
A.
$$12$$ hexagons and $$20$$ pentagons.
B.
$$18$$ hexagons and $$14$$ pentagons.
C.
$$16\,$$ hexagons and $$16\,$$ pentagons.
D.
$$20$$ hexagons and $$12$$ pentagons.
Answer :
$$20$$ hexagons and $$12$$ pentagons.
Solution :
Fullerene $$\left( {{C_{60}}} \right)$$ contains $$20$$ hexagons ( six membered ) rings and 12 pentagons ( five membered rings ) .