The Solid State - Result Question 13
####13. Which of the following statements about the interstitial compounds is incorrect?
[NEET 2013]
(a) They are chemically reactive.
(b) They are much harder then the pure metal.
(c) They have higher melting points than the pure metal.
(d) They retain metallic conductivity.
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Solution:
- (a) Interstitial compounds are chemically inert.
In interstitial compounds small atoms like $H, B$ & $C$ enter into the void sites between the packed atoms of crystalline metal. They retain metallic conductivity and are chemically inert.
