Question

Buckminster fullerene is

• A. isotope of carbon
• B. isobar of carbon
• C. Allotrope of carbon
• D. None of these

Answer 1

The correct option is C

Allotrope of carbon

Buckminster fullerene is made up of carbon atoms. It has a football-like structure which hexagonal rings and pentagonal rings.

Allotrope of an element is defined as two or more forms that exist in different forms having different physical and chemical properties.

Buckminster fullerene is allotrope of carbon.

Isotope means an element has the same number of protons but the different number of neutrons.

Example: ${}_6{}^{12}\mathrm{C}$ and ${}_6{}^{13}\mathrm{C}$ are isotopes.

Isobar means an element has a different number of protons and the same number of neutrons.

Example: ${}_{19}{}^{40}\mathrm{K}$ and ${}_{20}{}^{40}\mathrm{Ca}$ are isobars.

So, there has no consideration of protons and neutrons.

Hence, option C is the correct answer.