Question

Which pair is not isomorphic? 1. NaF and MgO 2. KNO3 and NaNO3 3. NaF and CaCl2 4. K2SO4 and K2Cr2O7​

Answer 1

Explanation:

C

NaCl and KCl

Two or more substances having the same crystal structure are said to be isomorphous (iso – same, morphous – form) solids and the phenomenon is called isomorphism.”

NaCl and KCl have the same atomic ratio, similar molecular formula, and similar chemical properties. But they have different crystal structures. Thus, NaCl and KCl are not isomorphous.