1.

The outer electronic configuration of Gd (Atomic no. 64) is…..

Answer»

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

ANSWER :D


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