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BITSAT2016ChemistryStructure of AtomActual

The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at

Options

  1. A9 R 400 ~cm ⁻¹
  2. B7 R 144 ~cm ⁻¹
  3. C3 R 4 ~cm ⁻¹
  4. D5 R 36 ~cm ⁻¹

Correct answer

D. 5 R 36 ~cm ⁻¹

Step-by-step solution

For Balmer n ₁=2 and n ₂=3 ; v=R ( 1 2² - 1 3² )= 5 R 36 ~cm ⁻¹

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