Which of the following reaction does not takes place.

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$F_{2} + 2 {Cl}^{-} ⟶ 2 F^{- 1} + {Cl}_{2}$

${Br}_{2} + 2 I^{-} ⟶ 2 {Br}^{-} + I_{2}$

${Cl}_{2} + 2 F^{-} ⟶ 2 {Cl}^{-} + F_{2}$

${Cl}_{2} + 2 {Br}^{-} ⟶ 2 {Cl}^{-} + {Br}_{2}$

answer is C.

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Detailed Solution

Halogen atoms gain electrons and form halide ions. When halogens of lower molecular size react with halides of higher ionic size, the corresponding halides are formed.

Hence option(3) is not possible.

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