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Coordination and Oxidation Number

All the follo...

Question

All the following complexes show decrease in their weights when placed in a magnetic balance, then the group of complexes having tetrahedral geometry is:
(i) $N i (C O)_{4}$ (ii) $K [A g F_{4}]$ (iii) $N a_{2} [Z n (C N)_{4}]$ (iv) $K_{2} [P t C l_{4}]$ (v) $[R h C l (P P h_{3})_{3}]$

(ii), (iii), (v)

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(i), (ii), (iii)

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(i), (iii), (iv)

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None of these

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Solution

The correct option is C None of these
All electrons are paired in all the complexes. Thus these are diamagnetic in nature. They show decrease in weight in magnetic field.

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[F e (H_{2} O)_{6}]^{2 +}

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[N i (C O)_{4}]

[N i (H_{2} O)_{4}]^{2 +}

[N i (C N)_{4}]^{2 -}

[F e (H_{2} O)_{6}]^{2 +}

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[N i (C O)_{4}]

[N i (H_{2} O)_{4}]^{2 +}

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(I V) (E t_{4} N)_{2} [C o C l_{4}]

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