1.

The hydration enthalpies of alkali metal ions decreases in ________ order.

Answer»

`Li^+gtNa^+gtK^+gtRb^+gtCs^+`
`Cs^+gtRb^+gtK^+gtNa^+gtLi`
`Li^+gtRb^+gtK^+gtNa^+gtCs^+`
`Rb^+gtCs^+gtK^+gtNa^+gtLi`

ANSWER :A


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