Many transition metals form interstitial comp | vedclass

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(A) Interstitial compounds are formed when small atoms like $H, C, N$ or $O$ are trapped inside the crystal lattice of transition metals.The character

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$I, II, III$

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(A) Interstitial compounds are formed when small atoms like $H, C, N$ or $O$ are trapped inside the crystal lattice of transition metals.The characteristics of these 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 (not more reactive than pure metals).Therefore,statements $I, II,$ and $III$ are correct.

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