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Q.

Colour of lanthanide ions are observed mainly due to :

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a

f-f transitions

b

crystal field splitting

c

full f-orbital

d

partially filled d-subshell

answer is A.

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Detailed Solution

Color of lanthanide ions are observed mainly due to f-f transitions.

Visible light is absorbed when one or more unpaired electrons are present in the f orbital, causing an f-f transition and color.

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