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MHT CET202411 May 2024Morning ShiftChemistryStructure of AtomActual

What is the wave number of lowest transition associated with Lyman series?

Options

  1. Av = R _ H ( 3 4 )
  2. Bv = R _ H ( 5 36 )
  3. Cv = R _ H ( 4 3 )
  4. Dv = R _ H ( 36 5 )

Correct answer

A. v = R _ H ( 3 4 )

Step-by-step solution

For Lyman series, n ₁=1 The wave number of lowest transition associated with Lyman series corresponds to the transition from n=2 to n=1 . Therefore, n ₂=2 aligned v & = R _ H [ 1 n ₁^2 - 1 n ₂^2 ] cm ⁻¹ & = R _ H [ 1 1^2 - 1 2^2 ] cm ⁻¹ aligned = R _ H [1- 1 4 ] cm ⁻¹= R _ H [ 3 4 ] cm ⁻¹

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