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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 17 March 2021, Shift 2, Chemistry Q53

Question 53 of 90 in this shift, Chemistry question 23 of 30, Section B.

In the ground state of atomic Fe(Z=26Z = 26), the spin-only magnetic moment is __________×10−1\times 10^{-1} BM. (Round off to the Nearest Integer). [Given : 3=1.73\sqrt{3} = 1.73, 2=1.41\sqrt{2} = 1.41 ]

Official answer

49

NTA final key.

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2024, Shift 2 · Q69Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) Sc (B) Cr (C) V (D) Ti (E) Mn Choose the…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 108 of the 174 JEE Main shifts held from 2017 to 2026.