HARDMCQ SINGLEJEE Mains ChemistryInorganic 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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