1.

The outer electronic configuration of Gd (Atomic No:64) is :

Answer»

`4F^(4) 5D^(4) 6s^(2)`
`4f^(7) 5d^(1) 6s^(2)`
`4f^(3) 5d^(5) 6s^(2)`
`4f^(6)5d^(0) 6s^(2)`

Solution :`Gd : [Xe] 4f^(7) 5d^(1) 6s^(2)`


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