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Electronic configuration of .(21)Sc is...

Electronic configuration of `._(21)Sc` is

A

`1s^(2) 2s^(2)2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(1)`

B

`1s^(2) 2s^(2)2p^(6) 3s^(2) 3p^(6) 4s^(1) 3d^(2)`

C

`1s^(2) 2s^(2)2p^(6) 3s^(2) 3p^(6) 4s^(0) 3d^(3)`

D

`1s^(2) 2s^(2)2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A

`Sc(Z = 21): 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(1)`
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