Which the following series fall in the visible range of electromagnetic spectrum of a hydrogen atom?

Question

Which the following series fall in the visible range of electromagnetic spectrum of a hydrogen atom?, Brackett series, Lyman series, Balmer series, Paschan series

MARKS App · Accepted Answer

1 λ = R 1 n f 2 - 1 n i 2 Balmer Series; n f = 2 ; n i = 3,4 , 5 , . . . . . . 1 λ = 1.097 × 1 0 7 m = 1 4 - 1 9 ⇒ 1 λ = 1.097 × 1 0 7 m = 5 36 ⇒ λ = 36 5 × 1 0 - 7 1.097 m ⇒ λ = 6.56 × 1 0 - 7 m ⇒ λ = 656 × 1 0 - 9 m This wavelength falls in visible range.

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