Question

Why ce3+ gives broad band while other lanthanoids give sharp bands?

Answer 1

Answer:

heya..

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On the other hand Gd (Gadolinium) gives absorption band in UV- region and it has two ... The f-f transitions which give rise to sharp, narrow bands of comparatively weak intensities

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Answer 2

Answer:

The f-f transitions which give rise to sharp, narrow bands of comparatively weak intensities. Ce3+ as a rather broad band in the infra-red region just above 2000 cm-l .) Ce3+ and Yb3+ do, however, give rise to broad UV.