Practice question
Question
What is the wavenumber of light emitted when an electron in a hydrogen atom transitions from n = 4 to n = 2? (RH = 1.097 × 10⁷ m⁻¹)
Explanation
ν̄ = RH (1/4 - 1/16) = 2.057×10⁶ m⁻¹.
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