Question

(A) Energy emitted in the transition $(5\to 2)$ is less than that of . the transition $(2\to 1)$ in all hydrogen like atoms.
(R) The energy difference between 1st and 2nd shell is greater than that of any two energy levels provided level (1) is not part of those two energy levels.

• A. Both (R) and (A) are true and reason is the. correct explanation of assertion
• B. Both (R) and (A) are true but reason is not correct explanation of assertion
• C. Assertion (A) is true but reason (R) is false
• D. Assertion (A) and reason (R) both are false
• E. Assertion (A) is false but reason (R) is true

Answer 1

The correct option is A Both (R) and (A) are true and reason is the. correct explanation of assertion

Energy emitted in the transition $(5\to 2)$ is less than that of . the transition $(2\to 1)$ in all hydrogen like atoms, because the energy difference between 1st and 2nd shell is greater than that of any two energy levels provided level (1) is not part of those two energy levels.

So both (R) and (A) are true and reason is the. correct explanation of assertion.

Hence option A is correct.