JEE Main 2025 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 4 April 2025, Shift 2, Chemistry Q51

Question 51 of 75 in this shift, Chemistry question 1 of 25, Section A.

Consider the ground state of chromium atom

(Z=24)

. How many electrons are with Azimuthal quantum number

l=1

and

l=2

respectively ?

(1)12 and 4
(2)12 and 5Official answer
(3)16 and 4
(4)16 and 5

Official answer

Option 2

NTA final key.

Chapter: Structure of Atom
Topic: Quantum Numbers
Idea tested: Anomalous Electron Configurations

Same idea in other shifts

Asked 3× in all

5 Apr 2026, Shift 1 · Q53Identify the correct statements from the following : A. Heisenberg uncertainty principle is applicable to electrons. B. The size of $2p_x$ …EasyOther
29 Jun 2022, Shift 1 · Q62Which of the following statements are correct ? (A) The electronic configuration of Cr is [Ar] $3d^5\,4s^1$ . (B) The magnetic quantum…EasyOther

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.