Question

Which of the following(s) is/are the physical and chemical characteristics of interstitial compounds?

• A. They have high melting points, higher than those of pure metals.
• B. They are very hard, some borides approach diamond in hardness.
• C. They retain metallic conductivity
• D. They are chemically inert

Answer 1

Answer: (A), (B), (C), (D)

They are chemically inert

The principal physical and chemical characteristics of these compounds are as follows: (i) They have high melting points, higher than those of pure metals. (ii) They are very hard, some borides approach diamond in hardness. (iii) They retain metallic conductivity. (iv) They are chemically inert.