Q12 of 53 Page 234

What are interstitial compounds? Why are such compounds well known for transition metals?

Interstitial compounds are those compounds in which small atomic size elements like H, C, N occupy the interstitial sites of the crystal lattice of the Transition metal due to their large size.

Example, in the diagram given below:



Here, Green Balls form the Crystal lattice of transition metal and Blue balls represent elements like H/C/N which occupy the interstitial sites.


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Explain giving reasons:

Transition metals and their many compounds act as good catalyst.

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How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.

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