Question
The pair(s) of diamagnetic ions is(are)
JEE Advanced
Chemistry
d and f Block Elements
2025
JEE Advanced 2025 (Paper 1)
JEE Advanced Chemistry Question (2025) — Solution
Options
- A. La ^ 3+ , Ce ^ 4+
- B. Yb ^ 2+ , Lu ^ 3+
- C. La ^ 2+ , Ce ^ 3+
- D. Yb ^ 3+ , Lu ^ 2+
Answer
B. Yb ^ 2+ , Lu ^ 3+
Step-by-step solution
aligned La ^ +3 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \\ Yb ^ +2 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \\ Lu ^ +3 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \\ La ^ +2 [ _ 54 Xe ] 5 ~d ^1 & -paramagnetic \\ Ce ^ +4 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \\ Ce ^ +3 [ _ 54 Xe ] 4 f ^1 & -paramagnetic \\ Yb ^ +3 [ _ 54 Xe ] 4 f ^ 13 & -paramagnetic \\ Lu ^ +2 [ _ 54 Xe ] 4 f ^ 14 5 ~d ^1 & -paramagnetic aligned
Related: Chemistry — d and f Block Elements · All PYQ Banks