Given below are two statements : one is labelled as

Question:

Given below are two statements : one is labelled as

Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Lithium salts are hydrated.

Reason (R) : Lithium has higher polarising power than other alkali metal group members.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).

  2. (A) is correct but (R) is not correct.

  3. (A) is not correct but $(\mathbf{R})$ is correct.

  4. Both (A) and $(\mathbf{R})$ are correct and $(\mathbf{R})$ is the correct explanation of (A).


Correct Option: 1

Solution:

Lithium salts are hydrated due to high hydration energy of $\mathrm{Li}^{+}$

$\mathrm{Li}$ due to smallest size in IA group has highest polarizing power.

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