The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9 . The spectral series are:

Question

The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9 . The spectral series are:, Paschen and Pfund, Balmer and Brackett, Lyman and Paschen, Brackett and Pfund

MARKS App · Accepted Answer

1 λ 2 = R H 1 n 1 2 - 1 n 2 2 1 λ 1 = R H 1 m 1 2 - 1 m 2 2 As for shortest wavelengths, n 2 and m 2 is ∞ . ∴ λ 1 λ 2 = 9 1 = m 1 2 n 1 2 Now if m 1 = 3 and n 1 = 1 it will justify the statement hence Lyman and Paschen B is correct.

Search any question & find its solution

Looking for more such questions to practice?