Chemistry, asked by sahutuleshwari41, 8 months ago

La is colorless but 4+ Lu is orange red.

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Answered by cutiepiepuppy9

1

filled 4f orbitals are highly stable, the formation of Ce+4, La+3(4f0),Th+4,Eu+2,Gd+3(4f7) and Yb+2,Lu+3(4f14) ions can be explained.

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