Which of the following |D and f Block Elements|JEE MAIN 2026

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JEE MAIN_2026

05-04-26_S1

Question

Which of the following is NOT a physical or chemical characteristics of interstitial compounds?

Select the correct option:

A

They have high melting points, higher than those of pure metals.

B

They are very soft and ionic in nature.

C

They retain metallic conductivity.

D

They are chemically inert and usually non-stoichiometric.

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Solution

The physical and chemical characteristics of interstitial compounds are : (1) They have high melting points, higher than those of pure metals. (2) They are very hard, some borides approach diamond in hardness. (3) They retain metallic conductivity (4) They are chemically inert and usually nonstoichiometric.

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