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Q.

[CuCl₄]^2– exists while [Cul₄]^2– does not exist, because

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a

I^– is stronger oxidant than Cl^–

b

I^– is weaker reductant than Cl^–

c

I^– is stronger reductant than Cl^–

d

None of the above

answer is A.

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Detailed Solution

But in [CuI₄]^2- the bigger iodide ion makes the compound unstable.
When copper cation comes in contact with iodide anion, iodide get oxidized to iodine molecule hence the formation of the above complex ion does not take place.

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