Practice question

MCQ

Question

An electron in a hydrogen atom transitions from n = 3 to n = 2. What is the wavenumber of the emitted light? (RH = 1.097 × 10⁷ m⁻¹)

Choose one · Correct answer highlighted

2.742 × 10⁶ m⁻¹ 1.5236 × 10⁶ m⁻¹ Correct 3.291 × 10⁶ m⁻¹ 1.097 × 10⁷ m⁻¹

ν̄ = RH (1/4 - 1/9) = 1.5236×10⁶ m⁻¹.

Share this question

Discussion

0 comments

Please log in to join the discussion.

No comments yet. Be the first to start the discussion.

Guides and insights connected to this topic

Class IX Science 14 Sep 2026

Explore the fundamentals of atoms, from ancient ideas to Dalton's theory, Bohr's model, and electronic configuration in clear notes.

Botany 06 Sep 2026

Clear biology notes on cellular respiration in plants, covering glycolysis, fermentation, the Krebs cycle, ETS, and respiratory quotient.

Biochemistry 10 Sep 2024

Fatty Acids: Structure and ImportanceFatty acids are chain-like carboxylic acids (organic compounds with a carboxyl group) with long hydroca...