1.

For the reaction X​2​ + 2Y​–​ → Y​2​ + 2X​–​, X and Y may not be

Answer»

If X = F than Y = CL, BR or I (
If X = Cl than Y = Br or I
If X = Br than Y = I
If X = Br than Y = F, Cl or I

ANSWER :D


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