Question

Which among the following is not true with respect to diamond?

• A. It is soft in nature.
• B. It is available in various colours.
• C. Its atoms are not arranged in a definite geometrical shape.
• D. It is a bad conductor of electricity.

Answer 1

Answer: (A), (C)

The correct options are
A It is soft in nature.
C Its atoms are not arranged in a definite geometrical shape.

Following are the characteristics of a diamond:

• It is hard in nature because every carbon atom is strongly bonded with four other carbon atoms.
• It is a crystalline form of carbon so the carbon atoms are arranged in a definite geometrical shape.
• It is generally colourless but is available in few colours such as red, green, yellow, brown, etc. The colour is due to the presence of the metallic impurities.
• It is a bad conductor of electricity as each carbon atom is covalently bonded with four other carbon atoms and there are no free electrons.