Aufbau principle is not satisfied by [MP PMT 1997]

1.	Aufbau principle is not satisfied by [MP PMT 1997]
A.	\[Cr\] and \[Cl\]
B.	\[Cu\] and \[Ag\]
C.	\[Cr\] and \[Mg\]
D.	\[Cu\] and \[Na\]
Answer» C. \[Cr\] and \[Mg\]

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Aufbau principle is not satisfied by [MP PMT 1997]

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