(a) Fifty
(b) Sixty
(c) Seventy
(d) Ninety
Solution:
Option (b) is the answer.
Buckminsterfullerene has the formula C60 and is a kind of fullerene. It is made up of twenty hexagons and twelve pentagons and has a cage-like fused-ring structure (truncated icosahedron) that resembles a soccer ball. There are three bonds between each carbon atom.