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Assertion (A): For questions below, two statements are given one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes \( (a),(b),(c) \) and \( (d) \) given below :
(a) Both \( \mathrm{A} \) and \( \mathrm{R} \) are correct and \( \mathrm{R} \) is the correct explanation of \( \mathrm{A} \).
(b) Both \( \mathrm{A} \) and \( \mathrm{R} \) are correct but \( \mathrm{R} \) is not the correct explanation of \( \mathrm{A} \).
(c) A is correct but \( \mathrm{R} \) is wrong.
(d) A is wrong but \( \mathrm{R} \) is correct.
Assertion. The ionic character of hydrides increases from \( \mathrm{Li} \) to \( \mathrm{Cs} \).
Reason (R): Reason. As the size of the cation increases, the anion hydride ion can polarize the cation more easily.
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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