In a series of experiments between various halogen solutions with aqueous halides

CHEMISTRY · Single correct · A Level · Chemistry · Group 7 elements (halogens) · Group 7 elements (halogens)

Problem

In a series of experiments between various halogen solutions with aqueous halides, the following results were obtained.
Halide X−(aq)X^{-}(aq)Halide Y−(aq)Y^{-}(aq)Halide Z−(aq)Z^{-}(aq)
Halogen X2(aq)X_{2}(aq)no reactionreactionno reaction
Halogen Y2(aq)Y_{2}(aq)no reactionno reactionno reaction
Halogen Z2(aq)Z_{2}(aq)reactionreactionno reaction
Which is the correct likely identity of X, Y and Z? (1) X = fluorine, Y = chlorine, Z = iodine (2) X = bromine, Y = iodine, Z = chlorine (3) X = iodine, Y = bromine, Z = chlorine (4) X = fluorine, Y = iodine, Z = bromine

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