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If the aufbau principle had not been fol...

If the aufbau principle had not been followed, Ca (Z=20) would have been placed in the:

A

`K(19)`

B

`Sc(21)`

C

`V(23)`

D

`Ni(28)`

Text Solution

Verified by Experts

The correct Answer is:
A
If Aufhan rule is not followed, electronic configuration is `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(1)` Last electron is in `3d` (instead of `4s`) hence d block (but it is of s block)
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