1.

the atomicnumber ofcerium( Ce )is 58 . Thecorrectelectronicconfigurationof Ce^(3+) ion is

Answer»

`[Xe] 4F^(1)`
`[KR]4f^(1)`
`[Xe] 4f^(13)`
`[Kr] 4d^(1)`

SOLUTION :Referto footnoteon PAGE`3//14`
E.C.Of Ce (Z= 58) = [Xe] 4f^(1)5d^(1)6s^(2)`
`:. ` E.C.Of `Ce^(3+) = [Xe]4f^(1)`
Thusoption( a) iscorrect .


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