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Which electronic configuration does not ...

Which electronic configuration does not follow the Aufbau rule? 

A

`1s^2, 2s^2, 2p^6`

B

`1s^2,2s^2, 2p^4, 3s^2`

C

`1s^2`

D

`1s^2, 2s^2, 2p^6, 3s^3`

Text Solution

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The correct Answer is:
B
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