1.

The most accepted abserved electronic configuration of lanthanide is

Answer»

`6S^(2), 4f^(0-14) , 5D^(1)`
`6s^(2), 4f ^(1-14) , 5d ^(0-1)`
`6s^(2), 4f^(2-14), 5d ^(0-1)`
`6s^(2), 4f ^(2-14), 5d^(1)`

Answer :B


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