1.

Which of the following is the correct electronic configuration of Sc (Z = 21)?

Answer»

`[AR] 3d^(3)`
`[Ar] 3d^(1) 4s^(2)`
`[Ar] 3d^(2) 4s^(1)`
`[Ar] 4s^(2) 4p^(1)`

SOLUTION :`[Ar] 3d^(1) 4s^(2)`


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