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Saturday, 10 October

NEET UG 2017 · Chemistry · Question 59

NEET 2017 Chemistry, question 59

Question 59 of the NEET 2017 paper (code A) is a Chemistry question from Structure of Atom. Its idea, Orbital Degeneracy, was asked twice, in 2017 and 2022, across NEET 2017–2026. The CBSE official answer key gives option 4.

Updated 2026-10-08

Q59 · Chemistry

Which one is the wrong statement ?

  1. 1de-Broglie's wavelength is given by λ=hmv\lambda = \frac{h}{mv}, where m = mass of the particle, vv = group velocity of the particle.
  2. 2The uncertainty principle is ΔE×Δt≥h/4π\Delta E\times\Delta t \geq h/4\pi.
  3. 3Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
  4. 4The energy of 2s orbital is less than the energy of 2p orbital in case of Hydrogen like atoms.Official answer

Official answer: option 4 · CBSE official answer key

Same idea

Orbital Degeneracy, in other papers

NEET asked this idea twice, in 2017 and 2022. The other question below.

  • 2022 Q70Identify the incorrect statement from the followingOne-line MCQ · Medium

Orbital Degeneracy: every question and how it was framed

The chapter

Structure of Atom in ten years of NEET

16 questions from 2017–2026, asked in 10 of 10 papers, about 1.5 a paper. Quantum Numbers alone had 16.

Chapter analysisStudy this chapterPractise this chapter

Structure of Atom: questions per paper

0241’171’182’191’202’212’222’232’242’251’26