1.

The least soluble compound (salt) of the following is

Answer»

CsCl` (K_(sp) = 10^(-12))`
HgS `(K_(sp) = 1XX 10^(-52))`
`PbCl_(2) (K_(sp) = 1.7 xx 10^(-5))`
`ZNS (K_(sp) = 1.2 xx 10^(-23))`

ANSWER :B


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