Question
The UV-visible absorption bands in the spectra of lanthanoid ions are ' X ', probably because of the excitation of electrons involving ' Y '. The ' X ' and ' Y ', respectively, are :
NEET
Chemistry
d and f Block Elements
2024
NEET 2024 (Re-NEET)
NEET Chemistry Question (2024) — Solution
Options
- A. Broad and f orbitals
- B. Narrow and f orbitals
- C. Broad and d and f orbitals
- D. Narrow and d and f orbitals
Answer
B. Narrow and f orbitals
Step-by-step solution
In lanthanoids, absorption bands are narrow because of excitation within f-level.
Related: Chemistry — d and f Block Elements · All PYQ Banks