Question

Apart from Carbon, which other elements commonly form allotropes?

• A. Sulphur and Boron.
• B. Oxygen and Phosphorus
• C. Oxygen, Phosphorus and Barium
• D. Oxygen, Phosphorus and Sulphur

Answer 1

The correct option is D

Oxygen, Phosphorus and Sulphur

Apart from allotropes of carbon (diamond, graphite, and buckminsterfullerene) other elements also exist in allotropic forms and have other applications as well. These elements are Oxygen, Phosphorus, Sulphur, and Boron.

Allotropes of these elements are:-

Oxygen:- Ozone $O_3$

Phosphorous:- White phosphorous and red phosphorous

Sulphur:- Yellow rhombic sulphur and monoclinic sulphur

Boron:- Alpha-rhombohedral and Beta-rhomobohedral