Question

Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C), and (D) as given below.
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C) and (D) as given below.
Assertion (A): The Balmer series in the hydrogen atom spectrum is formed when the electron jumps from a higher energy state to the ground state.
Reason (R): In Bohr's model of the hydrogen atom, the electron can jump between successive orbits only.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Both Assertion (A) and Reason (R) are false.

Hint:

In the Bohr model of the hydrogen atom, the electron can jump between any two orbits, and the Balmer series corresponds to transitions where the final state is \( n = 2 \), not the ground state \( n = 1 \).

Answer 1

The Correct Option is D

- Assertion (A): The Balmer series in the hydrogen atom spectrum is formed when the electron transitions from a higher energy state to the \( n = 2 \) energy level, not necessarily the ground state. This is because the Balmer series corresponds to transitions where the final state is \( n = 2 \), not \( n = 1 \). Therefore, Assertion (A) is false.
- Reason (R): In Bohr's model of the hydrogen atom, the electron can indeed jump between any two allowed orbits, not just successive orbits. The electron can jump between any two levels, provided that the energy difference matches the energy of the emitted or absorbed photon. Therefore, Reason (R) is also false. Thus, both Assertion (A) and Reason (R) are false, and the correct answer is option (D).