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The order of sum of the first three ioni...

The order of sum of the first three ionization energies of the lanthanoids Ce, Eu, Gd, Yb and Lu is : `Ce gt Eu gt Gd gt Yb gt Lu`, `Yb gt Lu gt Eu gt Gd gt Ce`, `Yb gt Eu gt Lu gt Gd gt Ce`, `Yb gt Eu gt Gd gt Lu gt Ce`

A

`Ce gt Eu gt Gd gt Yb gt Lu`

B

`Yb gt Lu gt Eu gt Gd gt Ce`

C

`Yb gt Eu gt Lu gt Gd gt Ce`

D

`Yb gt Eu gt Gd gt Lu gt Ce`

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