(d) In comparision of transition metal ions, why do the lanthanide ion

1.	(d) In comparision of transition metal ions, why do the lanthanide ionsgive rise to sharp bonds in their electronic spectra.
Answer» Answer: The 4f electrons of lanthanides yield three types of transitions: (i) INTERNAL 4f-4f transitions which GIVE rise to sharp, narrow bands of COMPARATIVELY weak INTENSITIES which are LAPORTE forbidden.

(d) In comparision of transition metal ions, why do the lanthanide ionsgive rise to sharp bonds in their electronic spectra.

Answer»

Answer:

The 4f electrons of lanthanides yield three types of transitions: (i) INTERNAL 4f-4f transitions which GIVE rise to sharp, narrow bands of COMPARATIVELY weak INTENSITIES which are LAPORTE forbidden.

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(d) In comparision of transition metal ions, why do the lanthanide ionsgive rise to sharp bonds in their electronic spectra.​

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(d) In comparision of transition metal ions, why do the lanthanide ionsgive rise to sharp bonds in their electronic spectra.