what is lyman series?
Answers
In physics and chemistry, the Lyman series is a hydrogen spectral series of transitions and resulting ultraviolet emission lines of the hydrogen atom as an electron goes from n > 2 to n = 1 , the lowest energy level of electron .
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Hey !!
LYMAN SERIES
Lines corresponding to transition form outer energy levels n₂ = 2,3,4,......∞ to first orbit (n₁ = 1) constitute Lyman series. The wave numbers of different lines are given by
v(bar) = 1/λ [1/1² - 1/n₂²]
(i) Line corresponding to transition from n₂ = 2 to n₁ = 1 is first line; its wavelength is maximum.
∴ 1/λmax = R[1/1² - 1/2²] = 1.1 × 10⁷ [1/1 = 1/4]
= λmax = 1215.4 À
Similarly, transition from n₂ = ∞ to n₁ = 1 gives line of minimum wavelength.
1/λ = R[1/1² - 1/∞²] = 1.1 × 10⁷
∴ λmin = 911 À
(ii) Lyman series lies in ultraviolet region of electromagnetic spectrum.
(iii) Lyman series is obtained in emission as well as in adsorption spectrum.