What if afbau rule pls don't spam in here .only reply if you know the

1.	What if afbau rule pls don't spam in here .only reply if you know the answer
Answer» Filling of 3d orbital starts after the filling of 4s orbitals. If the AUFBAU PRINCIPLE had not been followed, the filling of 3d orbital WOULD have been PRIOR to filling of 4s orbital and the electronic configuration of Ca would have been 1s22s22p63s23p63d2 and it would have been placed in the d-block.Explanation:i think it's helpful to yousorry if it is wrong

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