Statement I: Ferromagnetism is considered as an extreme form of paramagnetism. Statement II: The number of unpaired electrons in Cr^ 2+ ion (Z=24) is the same as that of Nd^ 3+ ion (Z=60).

Home › MCQs › NEET Chemistry › Question #1078

NEET Chemistry QUESTION #1078

Question 1

Statement I: Ferromagnetism is considered as an extreme form of paramagnetism. Statement II: The number of unpaired electrons in Cr\(^{2+}\) ion (\(Z=24\)) is the same as that of Nd\(^{3+}\) ion (\(Z=60\)).

Statement I is true but Statement II is false✔️
Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false

Correct Answer Explanation

Statement I is true — ferromagnetism arises from cooperative alignment of magnetic dipoles in domains, and is indeed an extreme form of paramagnetism. Statement II: Cr\(^{2+}\) ([Ar]3d\(^4\)) has 4 unpaired electrons. Nd\(^{3+}\) ([Xe]4f\(^3\)) has 3 unpaired electrons. They are NOT the same. Statement II is false.

More Options