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Question
Q104) Among FeSO4.7H2O (A), CuSO4.5H2O (B), ZnSO4.7H2O (C), MnSO4.4H2O (D), isomorphous salts are ... [ DPMT 2003]




SOLUTION

Isomorphous substances usually have similar chemical formulas, and the polarizability and ratio of anion and cation radii are generally comparable
Ionic radii of Fe2+ is 70 pm and that of Zn2+ is 74pm
Answer: (a)