Characteristics of interstitial compounds:
i. The chemical properties of interstitial compounds are similar to those of the parent transition metal.
ii. They are hard and lustrous.
iii. They exhibit electrical and thermal conductivity.
iv. They have melting points higher than pure metals, due to stronger metal—non-metal bonds as compared to metal–metal bonds in pure metals.
v. They have lower densities, when compared to parent metals.
vi. Transition metal hydrides are used as powerful reducing agents.
vii. Transition metallic carbides are chemically inert and extremely hard like diamond.
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