Exams › JEE Advanced › Chemistry
Which alkaline earth metal ion among the following has the highest hydration enthalpy?
- Be2+
- Ba2+
- Sr2+
- Ca2+
Correct answer: Be2+
Solution
Hydration enthalpy is inversely proportional to ionic radius. Be²+ has the smallest ionic radius (0.31 Angstrom) among Group 2 ions and thus has the highest hydration enthalpy.
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