A) common ion effect
B) solubility product
C) valency of radicals
D) strength of salt
Correct Answer: B
Solution :
Basic radicals have been classified into 6 groups on the basis of the solubility products of their salts with group reagent. The radicals have been grouped in the order of-increasing solubility product. This is the reason, why \[\text{NiC}{{\text{l}}_{\text{2}}}\]does hot precipitate with 1st group chlorides or \[Zn{{(OH)}_{2}}\]does not precipitate with \[\text{Al(OH}{{\text{)}}_{\text{3}}}\]in IIIrd group.
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