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Q.

The hydration energy of lithium ion is -544 kJ mol-1 which is higher than that of other alkali metal ions. This is explained mainly in terms of

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a

Low atomic weight

b

higher I.P of Lithium 

c

High reactivity

d

small size of lithium ion

answer is A.

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Detailed Solution

Li+ ion has small size and can attract more water molecules, Hence release high energy called as Lattice energy.

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