Hydrogen (H), deuerium (D), singly ionised helium (He)+ and doubly ionised (Li++) all have one electron round the nucleus. Consider n = 2 to n = 1 transition. The wavelength of emitted radiations are λ1,λ2,λ3 and λ4 respectively. Then approximately
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Hydrogen (H), deuerium (D), singly ionised helium (He)+ and doubly ionised (Li++) all have one electron round the nucleus. Consider n = 2 to n = 1 transition. The wavelength of emitted radiations are λ1,λ2,λ3 and λ4 respectively. Then approximately