D-And F-Block Elements Ques 243

Question: Chloride of which of the following element is coloured

[MP PMT 1990]

Options:

A) $ Ag $

B) $ Hg $

C) $ Zn $

D) $ Co $

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Answer:

Correct Answer: D

Solution:

$ CoCl_3-C{{o}^{+3}}-3d^{6}4s^{0} $ 4 unpaired electrons. So it will be coloured.



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