Question bank/NEET UG/Chemistry

NEET UGChemistryModerateNEET 2025

Given below are two statements :
Statement I : Ferromagnetism is considered as an extreme form of paramagnetism.

Statement II : The number of unpaired electrons in a
Cr2+Cr^{2+} ion (Z = 24) is the same as that of a Nd3+Nd^{3+} ion (Z = 60).
In the light of the above statements, choose the correct answer from the options given below :

Show answer and solution
Sol. Substances which are attracted very strongly in applied magnetic field are termed as ferromagnetic. Infact, ferromagnetism is an extreme form of paramagnetism.
Hence statement I is correct.

Cr2+=3d44s0Cr^{2+} = 3d^44s^0
Unpaired electrons = 4

Nd3+=4f36s0Nd^{3+} = 4f^3 6s^0
Unpaired electrons = 3

Hence, Statement II is incorrect

Source: geekyrakshit/indian-exam-questions / neet2025-code45

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