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CFT and Electronic configuration

Among the following, the complexes that will not show any chan

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Among the following, the complexes that will not show any change in a magnetic moment, on replacing a strong field ligand with a weak field ligand or vice versa is/are

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[Cr (C_{2} O_{4})_{3}]^{3 -}

[NiCl_{4}]^{2 -}

[TiCl_{6}]^{2 -}

[MnF_{6}]^{4 -}

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Text solutionVerified

(a)

[Cr (C_{2} O_{4})_{3}]^{3 -}

has

3

electrons hence

t_{2 g}^{3}

irrespective of ligand, pairing will not occur.
(b)

[NiCl_{4}]^{2 -}

is a tetrahedral complex. Since CFSE is small, pairing takes place after all the orbitals are singly filled-But hybridization changes with a strong field ligand.
(c)

[TiCl_{6}]^{2 -}

has a

d^{\circ}

configuration so

μ

is always zero.
(d)

[MnF_{6}]^{4 -}

weak field will have 5 unpaired electrons strong field will have

1

unpaired electrons.

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Question Text	Among the following, the complexes that will not show any change in a magnetic moment, on replacing a strong field ligand with a weak field ligand or vice versa is/are
Topic	Coordination Compounds
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1
Upvotes	96

Among the following, the complexes that will not show any change in a magnetic moment, on replacing a strong field ligand with a weak field ligand or vice versa is/are

Text solutionVerified

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