The maximum wavelength of Lyman series is:
Correct answer: A. 4/3R
- A. 4/3R
- B. 1/R2
- C. C/R
- D. 1/RC
Explanation
The maximum wavelength of the Lyman series occurs when an electron in a hydrogen atom undergoes a transition from the n=2 energy level to the n=1 energy level. This transition corresponds to the emission of a photon with the maximum wavelength in the Lyman series. The wavelength of this photon can be calculated using the Rydberg formula:1/λ = R(1/1^2 - 1/2^2)= Rh(3/4)λ= 4/3RhWhere λ is the wavelength of the photon, R is the Rydberg constant (1.097 x 10^7 m^-1), and the values of n are 1 and 2 for the n=1 and n=2 energy levels, respectively.Solving for λ, we get:λ = 121.6 nm.Therefore, the maximum wavelength of the Lyman series is 121.6 nm.
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