Fullerene or buckyball is made up of _____ carbon atoms.

Correct answer: (e) None of the above/More than one of the above

Explanation

The best-known fullerene, the buckyball or buckminsterfullerene (C₆₀), has 60 carbon atoms arranged like a football: 12 pentagons and 20 hexagons.

60 is not among 20, 40, 45 or 50, so the answer is "None of the above". Other fullerenes such as C₇₀ exist too.