The UV-visible absorption bands in the spectra of lanthanoid ions are ' $X$ ', probably because of the…

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 :
  1. Broad and f orbitals
  2. Narrow and f orbitals
  3. Broad and d and f orbitals
  4. Narrow and d and f orbitals

Solution

In lanthanoids, absorption bands are narrow because of excitation within f-level.

Asked in: NEET 2024 (Re-NEET)

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