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Multiple choice

The Rydberg constant (RH) for hydrogen is given as 109670 cm-1. The longest wavelength line in the Lyman series for hydrogen spectrum is

  1. 972.6 Angstrom

  2. 986.8 Angstrom

  3. 1025.8 Angstrom

  4. 1215.8 Angstrom

  5. 1725.6 Angstrom

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wavelength = 1/ wave number = 1/82252.5 = 1215.8 × 10-8 cm = 1215.8 Angstrom

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