Assertion (A): Use the following key to choose the appropriate answer. (a) If the assertion as w...

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Assertion (A): Use the following key to choose the appropriate answer.
(a) If the assertion as well as the reason are correct, and the reason is the correct explanation of the assertion.
(b) If the assertion as well as the reason are correct, but the reason is not the correct explanation of the assertion.
(c) If the assertion is correct but the reason is not.
(d) If the assertion is incorrect but the reason is correct.
Bohr's theory gave reasonably correct spectroscopic results for hydrogenic species even though it used classical mechanics for its derivation.
Reason (R): The semiclassical approach is valid to some extent for spectroscopic derivations in the context of hydrogenic species.
(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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