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 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ CoCl_3-C{{o}^{+3}}-3d^{6}4s^{0} $ 4 unpaired electrons. So it will be coloured.