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JEE Main202622 January 2026Evening ShiftChemistryStructure of AtomActual

The energy of first (lowest) Balmer line of H atom is x ~J . The energy (in J) of second Balmer line of H atom is :

Options

  1. A1.35 x
  2. Bx²
  3. C2 x
  4. Dx 1.35

Correct answer

A. 1.35 x

Step-by-step solution

First Balmer line: transition n=3 to n=2, energy E₁ = 13.6( 1 4 - 1 9 ) = 13.6 5 36 = x J. Second Balmer line: transition n=4 to n=2, energy E₂ = 13.6( 1 4 - 1 16 ) = 13.6 3 16 J. Ratio: E₂ E₁ = 3 16 5 36 = 3 16 36 5 = 27 20 = 1.35 . Thus second Balmer line energy is 1.35x J.

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