Wave model of light - 2 | Early Quantum Theory

Chapter 4 - Early Quantum Theory

Hydrogen has an indigo emission line at 410.2 nm. What is the energy and frequency of a photon of this light?

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Solution

E = hν = hc/λ E =

\frac{6.626 \times 10^{- 34} \times 3.0 \times 10^{8}}{410.2 \times 10^{- 9}}

= 4.846 x 10^-19 J

c = λν ⇒ ν = c / λ = 7.314 x 10¹⁴ s^-1

General Chemistry 1 - Wave model of light - 2