Learn

Saturday, 31 October

JEE Main · Chemistry · Chemical Bonding and Molecular Structure

Counting Antibonding Electrons

JEE Main asked Counting Antibonding Electrons once in the 108 shifts Lumi analysed, on 9 Apr 2024, Shift 2. It belongs to Molecular Orbital Theory, in Chemical Bonding and Molecular Structure (Chemistry).

Updated 2026-10-24

Times asked
1
in 1 shift
Years
1 of 8
First asked
2024
the only year
Pattern
New since 2024
asked once so far

Questions on this idea a shift, by year

2017–2026. Asked in 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170’200’210’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20241 of 18
  • 20230 of 12
  • 20220 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Electrons in antibonding orbitals

Difficulty

Easy 1Medium 0Hard 0

1 of the 1 question had a numerical answer.

Every question

The question

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 9 Apr 2024, Shift 2 · Q82Total number of electrons present in (π∗)(\pi^*) molecular orbitals of O2\mathrm{O_2}, O2+\mathrm{O_2^{+}} and O2−\mathrm{O_2^{-}} is ________.EasyNumerical value

Shift: 9 Apr 2024, Shift 2.

Same topic

Other ideas in Molecular Orbital Theory

Molecular Orbital Theory has 11 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas