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JEE Main20198 Apr 2019Evening ShiftChemistryd and f Block ElementsActual

The statement that is INCORRECT about the interstitial compounds is:

Options

  1. AThey have high melting points.
  2. BThey are very hard.
  3. CThey are chemically reactive.
  4. DThey have metallic conductivity.

Correct answer

C. They are chemically reactive.

Step-by-step solution

The principal physical and chemical characteristics of interstitial 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.

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