Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are:
(I) They have high melting points, higher than those of pure metals
(II) They are very hard
(III) They retain metallic conductivity
(IV) They are chemically more reactive than the pure metals

I, I I, I I I

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I, I I

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I I, I V

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I V

only

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Solution

The correct option is A $I, I I, I I I$
(I) They have high melting points, higher than those of pure metals
(II) They are very hard
(III) They retain metallic conductivity

here the option i, ii and iii is correct

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Similar questions

Explain giving reasons:

(i) Transition metals and many of their compounds show paramagnetic

behaviour.

(ii) The enthalpies of atomisation of the transition metals are high.

(iii) The transition metals generally form coloured compounds.

(iv) Transition metals and their many compounds act as good catalyst.

(I)

(I I)

(I I I)

(I V)

why does interstitial compunds have higher melting point than pure metals?

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