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Question

Which of the following is coloured tetrahedral complex species?

A
[Cu(PPh3)4]+
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B
[Zn(H2O)6]2+
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C
[Cu(NH3)4]SO4
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D
MnO4
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Solution

The correct option is D MnO4
(A) [Cu(PPh3)4]+Tetrahedral PPh3 is a strong field ligand.d10 configuration, it is colorless(B) [Zn(H2O)6]2+Octahedral complex(C) [Cu(NH3)4]SO4Square plannar ; It is due to the transfer of one lectron from 3d orbital to higher orbital resulting dsp2 hybridization. So, the structure is square plannar. (D) MnO4d3S,Tetrahedral complex; purple coloured due to LMCT

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