Question

Some elements show the property of existing in two or more distinct physical form which show different physical properties but same chemical properties. These distinct forms of an element are called :

• A. isomers
• B. allotropes
• C. compounds
• D. isobars

Answer 1

Answer: (B)

allotropes

Allotropes of carbon have a different physical form but chemically they are similar, e.g., diamond and graphite are allotropes of carbon which are chemically carbon compounds but physically diamond is the hardest material known while graphite is soft material.

Hence, option $B$ is correct,