Absorption spectra of lanthanoids

2024 Re-NEET 1 question

1. 1 d and f Block Elements Medium
   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:
   A Broad and $f$ orbitals B Narrow and $f$ orbitals C Broad and $d$ and $f$ orbitals D Narrow and $d$ and $f$ orbitals
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