Reaction of Cu2+ salts with KI

1. A.
   ${Cu}_{2}I_{2}$
2. B.
   $CuI$
3. C.
   ${CuI}_{2}$
4. D.
   None of these

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1. A.
   $X = {CuI}_{2}$, $Y = {Na}_{2}S_{4}O_{6}$
2. B.
   $X = {CuI}_{2}$, $Y = {Na}_{2}S_{2}O_{3}$
3. C.
   $X = {Cu}_{2}I_{2}$, $Y = {Na}_{2}S_{4}O_{5}$
4. D.
   $X = {Cu}_{2}I_{2}$, $Y = {Na}_{2}S_{4}O_{6}$

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