chem question?
2017-11-10 1:48 pm
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 to n = 3 state.
回答 (1)
2017-11-10 4:30 pm
Rydberg equation : 1/λ = R [(1/n₁²) - (1/n₂²)], where
λ is the wavelength of light emitted or absorbed ;
R is the Rydberg constant, 1.097 × 10⁷ /m ; and
n₁ and n₂ are the states involved in electron transition (n₁ < n₂).
1/λ = (1.097 × 10⁷) × [(1/3²) - (1/5²)] /m
Wavelength, λ = 1 / {(1.097 × 10⁷) × [(1/3²) - (1/5²)]} m = 1.28 × 10⁻⁶ m = 1280 nm
λ is the wavelength of light emitted or absorbed ;
R is the Rydberg constant, 1.097 × 10⁷ /m ; and
n₁ and n₂ are the states involved in electron transition (n₁ < n₂).
1/λ = (1.097 × 10⁷) × [(1/3²) - (1/5²)] /m
Wavelength, λ = 1 / {(1.097 × 10⁷) × [(1/3²) - (1/5²)]} m = 1.28 × 10⁻⁶ m = 1280 nm
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