Question

The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). The following spectral lines will also occur in the absorption spectrum.

• A. 1, 4, 6
• B. 4, 5, 6
• C. 1, 2, 3
• D. 1, 2, 3, 4, 5, 6

Answer 1

Answer: (C)

1, 2, 3

Answer 2

The absorption lines are obtained when the electron jumps from ground state (n = 1) to the higher energy states. Thus only 1, 2 and 3 lines will be obtained.