Explanation:

- Buckminsterfullerene, also known as C60, is a molecule composed entirely of carbon atoms. It is a spherical structure resembling a soccer ball.

- Allotropes are different structural forms of the same element. Carbon, for example, has several allotropes, including diamond, graphite, and buckminsterfullerene.

- Phosphorus has allotropes such as white, red, and black phosphorus.

- Boron has allotropes, including amorphous boron and crystalline boron.

- Iron does not typically form distinct molecular allotropes in the same way carbon does.