1.

Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.

Answer»

SOLUTION :The interstitial compounds are FORMED when small sized atoms such as H, B,C and N gets trapped in the interstitials of the metal atoms. The properties of interstitial compounds are:
(i) Melting points are high and even higher than pure metals.
(II) These compounds are extremely hard
(iii) Metallic conducitivity is RETAINED
(iv) They are chemically inert


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