Given below are two statements: One is labelled as Assertion A and the other labelled as Reason R. Assertion A: Lithium halides are somewhat covalent in nature. Reason R: Lithium possess high polarisi

Question

Given below are two statements: One is labelled as Assertion A and the other labelled as Reason R. Assertion A: Lithium halides are somewhat covalent in nature. Reason R: Lithium possess high polarising power. In the light of the above statements, choose the most appropriate answer from the options given below: +

(A) A is true but R is false
(B) A is false but R is true
(C) Both A and R are true but R is NOT the correct explanation of A
(D) Both A and R are true and R is the correct explanation of A

Prashant Kotian · Accepted Answer

Correct answer: D) BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A. Lithium halides are somewhat covalent. It is because of the high polarisation capability of lithium ion (The distortion of electron cloud of the anion by the cation is called polarisation). The Li ion is very small in size and has high tendency to distort electron cloud around the negative halide ion.

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