Which is incorrectly matched ?
CsBr3⇌Cs⊕+Br3⊖⇌Cs⊕+Br⊖+Br2
I4O9⇌I3++3IO3⊖
AgBrO3⇌Ag⊕Br3Θ
I2O4⇌IO2⊕+IO2Θ
AgBrO3⇌Ag⊕+BrO3-