JEE Main 2024 · ChemistryMultiple choiceMatch the listMediumApplication

JEE Main 30 January 2024, Shift 1, Chemistry Q66

Question 66 of 90 in this shift, Chemistry question 6 of 30, Section A.

Match List - I with List - II. List - I (Species) List - II (Electronic distribution) (A)

\mathrm{Cr^{+2}}

(I)

3d^8

(B)

\mathrm{Mn^{+}}

(II)

3d^3 4s^1

(C)

\mathrm{Ni^{+2}}

(III)

3d^4

(D)

\mathrm{V^{+}}

(IV)

3d^5 4s^1

Choose the correct answer from the options given below :

(1)(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
(2)(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
(3)(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
(4)(A)-(III), (B)-(IV), (C)-(I), (D)-(II)Official answer

Official answer

Option 4

NTA final key.

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

Same idea in other shifts

Asked 4× 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.