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Question

Among the following, which are ambidentate ligands?
(i) SCN
(ii) NO3
(iii) NO2
(iv) C2O24

A
(i) and (iii)
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B
(i) and (iv)
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C
(ii) and (iii)
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D
(ii) and (iv)
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Solution

The correct option is A (i) and (iii)
Ambidentate ligand has two or more donor atoms, but during complex formation, only one donor atom is attached to central metal. SCN ion has donor atoms N and S. It links to metal as either MSCN or MNCS. NO2 group has donor atoms N and O. It links to metal as either MONO or MNO2.

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