Assign reasons for the following : (i) Transition metals and many fo their compounds act as good catalyst. (ii) Transition metals generally from coloured compounds.

Assign reasons for the following : (i) Transition metals and many fo t

1.	Assign reasons for the following : (i) Transition metals and many fo their compounds act as good catalyst. (ii) Transition metals generally from coloured compounds.
Answer» (i) These metal shows variable oxidation states and form unstable intermediate which redily change into product . Hence these are good catalyst. (ii) Because they have unpaired electron in d-orbitals and under go d-d transition by absorbing light from visible region and radiate complementary colour.

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Assign reasons for the following : (i) Transition metals and many fo their compounds act as good catalyst. (ii) Transition metals generally from coloured compounds.

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