Learn

Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 26 June 2022, Shift 1, Chemistry Q64

Question 64 of 90 in this shift, Chemistry question 4 of 30, Section A.

Consider the ions/molecule O2+,O2,O2−,O22−\mathrm{O_2^+, O_2, O_2^-, O_2^{2-}} For increasing bond order the correct option is :
  1. (1)O22−<O2−<O2<O2+\mathrm{O_2^{2-}<O_2^-<O_2<O_2^+}Official answer
  2. (2)O2−<O22−<O2<O2+\mathrm{O_2^-<O_2^{2-}<O_2<O_2^+}
  3. (3)O2−<O22−<O2+<O2\mathrm{O_2^-<O_2^{2-}<O_2^+<O_2}
  4. (4)O2−<O2+<O22−<O2\mathrm{O_2^-<O_2^+<O_2^{2-}<O_2}

Official answer

Option 1

NTA final key.

Chapter
Chemical Bonding and Molecular Structure
Topic
Molecular Orbital Theory
Idea tested
Oxygen Ion Series Comparison

Same idea in other shifts

Asked 4× in all
  1. 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
  2. 26 Aug 2021, Shift 2 · Q32The bond order and magnetic behaviour of O2−\mathrm{O_2^-} ion are, respectively :MediumSingle correct
  3. 25 Jul 2021, Shift 2 · Q31In the following the correct bond order sequence is :EasySingle correct

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.