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Q.

Cu2++KCN (in excess)→soluble complex (X).

How many statements are correct regarding complex (X)?

(a) The central atom has the co-ordination number of 6
(b) The central atom has the co-ordination number of 4
(c) The complex is square planar
(d) The complex is diamagnetic
(e) The complex is paramagnetic

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answer is 2.

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Detailed Solution

Cu2++KCN (in excess)→K3Cu(CN)4

In complex K3Cu(CN)4 central atom has the co-ordination number of 4 and complex is paramagnetic.

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