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Assign reasons for the following : (i...

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

Text Solution

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(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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