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Saturday, 10 October

JEE Main Chemistry · Structure of Atom

Ionization and Excitation Energy

Ionization and Excitation Energy (Structure of Atom) was asked 2 times in 2 JEE Main shifts, 2024–2026, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.

Times asked
2
in 2 shifts
Years
2024–2026
Usual format
Numerical value
Calculation
Pattern
New since 2024
repeats across shifts

How it is asked

  • Ionization energy of hydrogen-like ion
  • Ionization energy from wavelength

Difficulty

Easy 1Medium 1Hard 0

Where it sits

Chapter: Structure of Atom. Topic: Bohr's Atomic Theory, 15 questions over 8 ideas.

Other repeat ideas in this topic

Every time it came

All 2 questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q52What is the energy (in J atom−1\mathrm{J\ atom^{-1}}) required for the following process ? Li2+(g)→Li3+(g)+e−\mathrm{Li^{2+}(g)\rightarrow Li^{3+}(g)+e^-} (Take…EasySingle correct
  2. 31 Jan 2024, Shift 1 · Q82The ionization energy of sodium in kJ mol−1^{-1}, if electromagnetic radiation of wavelength 242 nm is just sufficient to ionize sodium…MediumNumerical value