Coordination CompoundMedium
Question
Which of the following compound is coloured ?
Options
A.TiCl3
B.FeCl3
C.CoCl2
D.All of these
Solution
The colour is due to presence of unpaired d-electrons.
Ti3+ = [Ar]3d1 (one unpaired electron)
Fe3+ = [Ar]3d5 (five unpaired electrons)
Co3+ = [Ar]3d7 (three unpaired electrons)
So all of them are coloured.
Ti3+ = [Ar]3d1 (one unpaired electron)
Fe3+ = [Ar]3d5 (five unpaired electrons)
Co3+ = [Ar]3d7 (three unpaired electrons)
So all of them are coloured.
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