Practice question
Question
A hydrogen atom emits a photon of wavelength 410.2 nm. What is the energy difference between the initial and final states? (h = 6.626 × 10⁻³⁴ J s, c = 3.0 × 10⁸ m s⁻¹)
Explanation
E = hc/λ ≈ 4.847×10⁻¹⁹ J.
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