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When excess of sodium thiosulphate is ad...

When excess of sodium thiosulphate is added to dil `AgNO_3` solution a soluble compound X is formed . However when dil .`Na_2S_2O_3` solution is added to cone `AgNO_3` solution a white ppt turning yellow and finally black ppt of Y is obtained . Which is correct pair :

A

X is `Ag_2S` and Y is `Na_3[Ag(S_2O_3)_2]`

B

X is `Na_3[Ag(S_2O_3)_2]` and Y is `Ag_2S`

C

X is `Ag_2S_2O_3` and Y is `Ag_2S`

D

X is `Ag_2S_2O_3` and Y is `Na_3[(S_2O_3)_2]`

Text Solution

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The correct Answer is:
B
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