JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 27 January 2024, Shift 1, Chemistry Q82

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

The number of electrons present in all the completely filled subshells having

n = 4

and

s = +\frac{1}{2}

is __________. (Where

n

= principal quantum number and

s

= spin quantum number)

Official answer

NTA final key.

Chapter: Structure of Atom
Topic: Quantum Numbers
Idea tested: Maximum Electrons in a Subshell

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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.