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Friday, 9 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 18 March 2021, Shift 1, Chemistry Q52

Question 52 of 90 in this shift, Chemistry question 22 of 30, Section B.

AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on Molecular orbital theory, the bond order of AX is 2.5. The total number of electrons in AX is __________. (Round off to the Nearest Integer).

Official answer

15

NTA final key.

Chapter
Chemical Bonding and Molecular Structure
Topic
Molecular Orbital Theory
Idea tested
Bond Order Calculation

Same idea in other shifts

Asked 2× in all
  1. 29 Jan 2024, Shift 1 · Q82The number of species from the following which are paramagnetic and with bond order equal to one 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 42 of the 174 JEE Main shifts held from 2017 to 2026.