1.

Gadoliniumbelongsto 4f series. Itsatomicnumberis 64.Which of thefollowingis the correctelectronicconfigurationof gadolinium ?

Answer»

`[Xe] 4f^(9)5s^(1)`
`[Xe] 4f^(7)5D^(1)6S^(2)`
`[Xe] 4f^(6)5d^(2)6s^(2)`
`[Xe] 4f^(8)6D^(2)`

Solution :NA


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