Given below are the quantum numbers for 4 electrons. A. $n = 3, l = 2, m_l = 1, m_s = +1/2$ B. $n = 4, l = 1, m_l = 0, m_s = +1/2$ C. $n = 4, l = 2, m_l = -2, m_s = -1/2$ D. $n = 3, l = 1, m_l = -1, m_s = +1/2$ The correct order of increasing energy is

Option 2: $\mathrm{D} < \mathrm{A} < \mathrm{B} < \mathrm{C}$

$\mathrm{D} < \mathrm{B} < \mathrm{A} < \mathrm{C}$

$\mathrm{D} < \mathrm{A} < \mathrm{B} < \mathrm{C}$

$\mathrm{B} < \mathrm{D} < \mathrm{A} < \mathrm{C}$

$\mathrm{B} < \mathrm{D} < \mathrm{C} < \mathrm{A}$

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 29 July 2022, Shift 2, Chemistry Q62

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

Given below are the quantum numbers for 4 electrons. A.

n = 3, l = 2, m_l = 1, m_s = +1/2

n = 4, l = 1, m_l = 0, m_s = +1/2

n = 4, l = 2, m_l = -2, m_s = -1/2

n = 3, l = 1, m_l = -1, m_s = +1/2

The correct order of increasing energy is

(1) $\mathrm{D} < \mathrm{B} < \mathrm{A} < \mathrm{C}$
(2) $\mathrm{D} < \mathrm{A} < \mathrm{B} < \mathrm{C}$ Official answer
(3) $\mathrm{B} < \mathrm{D} < \mathrm{A} < \mathrm{C}$
(4) $\mathrm{B} < \mathrm{D} < \mathrm{C} < \mathrm{A}$

Official answer

Option 2

NTA final key.

Chapter: Structure of Atom
Topic: Quantum Numbers
Idea tested: Aufbau Principle and n+l Rule

Same idea in other shifts

Asked 8× in all

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.