For the spectrum of H-atom, which of the following statements is/are correct?

1. When electron returns to the ground state from higher energy levels, Lyman series is obtained.
2. The wavelengths of spectral lines of Lyman series are in ultra-violet region. Select the correct answer from the codes given below.

CONCEPT:

Hydrogen Atom Spectrum and Lyman Series

• When electrons in a hydrogen atom transition from higher energy levels (n > 1) to the ground state (n = 1), they emit energy in the form of light. These transitions correspond to the Lyman series.
• The Lyman series involves electronic transitions to the first energy level (n = 1).
• The wavelengths of the Lyman series fall in the ultraviolet (UV) region of the electromagnetic spectrum.

EXPLANATION:

• Statement 1: "When electron returns to the ground state from higher energy levels, Lyman series is obtained."
  • This is correct. The Lyman series includes all transitions to n = 1.
• Statement 2: "The wavelengths of spectral lines of Lyman series are in ultra-violet region."
  • This is also correct. UV wavelengths are characteristic of Lyman transitions.

Therefore, both statements are correct.

Correct Answer: 1) Both 1 and 2