JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 9 April 2024, Shift 2, Chemistry Q82

Question 82 of 90 in this shift, Chemistry question 22 of 30, Section B.

Total number of electrons present in

(\pi^*)

molecular orbitals of

\mathrm{O_2}

\mathrm{O_2^{+}}

and

\mathrm{O_2^{-}}

is ________.

Official answer

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: Molecular Orbital Theory
Idea tested: Counting Antibonding Electrons

Same topic in other shifts

All Molecular Orbital Theory questions

2 Apr 2026, Shift 1 · Q53Given below are two statements : Statement (I) : The correct sequence of bond lengths in the following species is :…MediumTwo statements
4 Apr 2026, Shift 2 · Q53Which of the following pictorial diagram most correctly represents the $\pi^*$ ( $\pi$ -antibonding) molecular orbital between two atoms if…MediumDiagram basedHas a figure
4 Apr 2024, Shift 1 · Q82Number of molecules/species from the following having one unpaired electron is ________. $\mathrm{O_2}$ , $\mathrm{O_2^{-1}}$ , NO,…MediumNumerical value
8 Apr 2024, Shift 2 · Q61When $\psi_A$ and $\psi_B$ are the wave functions of atomic orbitals, then $\sigma^*$ is represented by :EasySingle correct
8 Apr 2024, Shift 2 · Q83Number of molecules having bond order 2 from the following molecules is ________. $\mathrm{C_2}$ , $\mathrm{O_2}$ , $\mathrm{Be_2}$ ,…MediumNumerical value
9 Apr 2024, Shift 1 · Q82The total number of species from the following in which one unpaired electron is present, is ________.…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.