JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 12 April 2023, Shift 1, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

The bond order and magnetic property of acetylide ion are same as that of

(1) $\mathrm{O_2^+}$
(2) $\mathrm{N_2^+}$
(3) $\mathrm{NO^+}$ Official answer
(4) $\mathrm{O_2^-}$

Official answer

Option 3

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: Molecular Orbital Theory
Idea tested: Isoelectronic Species Principle in MOT

Same topic in other shifts

All Molecular Orbital Theory questions

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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.