Question

Which of the following is\are not allotropes of carbon?

• A. All four are allotropes of carbon
• B. Only 2 and 4 are allotropes of carbon
• C. Only 1 and 2 are allotropes of carbon
• D. Only 1 and 3 are allotropes of carbon

Answer 1

Answer: (A), (C)

The correct options are
A

All four are allotropes of carbon

C

Only 1 and 2 are allotropes of carbon

Allotropy is the property of some chemical elements to exist in two or more forms, in the same physical state. Carbon monoxide and carbon dioxide are not pure carbon, rather they are compounds of carbon. They are two combinations of carbon and oxygen. Allotropes must be a pure form of the element.