Chemistry · d and f Block Elements
NEET (UG) 2025 — Question 66
Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:
Statement I: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II: The number of unpaired electrons in a ion is the same as that of a ion ( ).
In the light of the above statements, choose the correct answer from the options given below :
- Option A:
Both Statements I and Statement II are true
- Option B:
Both Statement I and Statements II are false
- Option C:Correct
Statement I is true but Statement II is false
- Option D:
Statement I is false but Statement II is true
Answer: C
Step-by-step solution
Statement I: Ferromagnetism is an extreme form of paramagnetism, so it is true. For (Z = 24): configuration is [Ar]3d⁴, thus 4 unpaired electrons. For (Z = 60): configuration is [Xe]4f³, thus 3 unpaired electrons. Since 4 ≠ 3, Statement II is false. Hence, Statement I is true and Statement II is false, so the correct option is C.
Answer key and solution verified before publishing.
Practise d and f Block Elements
Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.
- Exam
- NEET (UG) 2025
- Paper
- 2025 paper
- Subject
- Chemistry
- Chapter
- d and f Block Elements
- Topic
- Properties of compounds of 3d Series elements + Comparison between 3d, 4d, 5d