Identify the correct order of solubility in aqueous medium: a. \( \mathrm{Na}_{2} \mathrm{~S}&gt...

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Identify the correct order of solubility in aqueous medium:
a. \( \mathrm{Na}_{2} \mathrm{~S}>\mathrm{CuS}>\mathrm{ZnS} \)
b. \( \mathrm{Na}_{2} \mathrm{~S}>\mathrm{ZnS}>\mathrm{CuS} \)
c. \( \mathrm{CuS}>\mathrm{ZnS}>\mathrm{Na}_{2} \mathrm{~S} \)
d. \( \mathrm{ZnS}>\mathrm{Na}_{2} \mathrm{~S}>\mathrm{CuS} \)
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