Coordination CompoundHard
Question
Among the following the compound that is both paramagtic and coloured is
Options
A.K2Cr2O7
B.(NH4)2[TiCl6]
C.VOSO4
D.K3Cu(CN)4
Solution
(d) In K3 [Cu(CN)4]Cu is + 1 oxidation state hence has no unpaired electron hence colourless and diamagnetic.
(b) In (NH4)2 [TiCl6Ti is in + 4 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic.
(c) In VOSO4 V is in +4 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic.
(a) In K2Cr2O7Cr is in + 6 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic. Though K2Cr2O7 has no unpaired electron but it is coloured.thus is due to charge transfer.
(b) In (NH4)2 [TiCl6Ti is in + 4 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic.
(c) In VOSO4 V is in +4 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic.
(a) In K2Cr2O7Cr is in + 6 oxidation state hence has no unpaired electron thus it is colourless and diamagnetic. Though K2Cr2O7 has no unpaired electron but it is coloured.thus is due to charge transfer.
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