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ChemistryJEE Main 21 Jan 2026, Shift 2·Q1·MCQ·Easy–moderate

Structure of Atom · Hydrogen spectrum spectral series

Consider the following spectral lines for atomic hydrogen:
  • (A)First line of Paschen series
  • (B)Second line of Balmer series
  • (C)Third line of Paschen series
  • (D)Fourth line of Brackett series
The correct arrangement of the above lines in ascending order of energy is:
  1. (1)D << C << A << B
  2. (2)A << B << C << D
  3. (3)C << D << B << A
  4. (4)D << A << C << B
We corrected a printing error in the original paper

Source printed “Fourth line of Bracket sereis”.

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