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BITSAT2020PhysicsAtomic PhysicsActual

The energy of electron in the nth orbit of hydrogen atom is expressed as E _ n = -13.6 n ² eV . The shortest and longest wavelength of Lyman series will be

Options

  1. A910 Ã, 1213 Ã
  2. B5463 Ã, 7858 Ã
  3. C1315 Ã, 1530 Ã
  4. DNone of these

Correct answer

A. 910 Ã, 1213 Ã

Step-by-step solution

1 _ = R [ 1 ( l )² - 1 (2)² ] _ max = 4 3 R 1213 Ã… and 1 _ = R [ 1 (1)² - 1 ] _ = 1 R 910 Ã…

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