HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistrys- Block 3.0Achiever Section
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
A.Li+>K+>Na+>Rb+>Cs+
B.Li+>Na+>K+>Rb+>Cs+
C.Li+>Na+>K+>Rb+>Cs+✓ Correct
D.Li+>Na+>Rb+>K+>Cs+
Explanation
Correct trend of hydration enthalpies of alkali metal ions is Li+>Na+>K+>Rb+>Cs+ This is due to increase in size from top to bottom.
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