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The salts are mostly hydrated....

The____ salts are mostly hydrated.

A

Cs

B

Li

C

K

D

Na

Text Solution

Verified by Experts

The correct Answer is:
B
Hydration enthalpies of alkali metal ions decrease with increase of ionic radii : `Li^(+) gt Na^(+) gt K^(+) gt Rb^(+) gt Cs^(+)`. On account of maximum charge density (charge/surface area), `Li^(+)` has the miaximum degree fo hydration. Thus, Li salts are mostly hydrated, e.g., `LiCI_(2).2H_(2)O`.
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