The order of filling of electrons in the orbitals of an atom will be

1.	The order of filling of electrons in the orbitals of an atom will be
Answer» 3d, 4S, 4P, 4d, 5S 4s, 3d, 4p, 5s, 4d 5s, 4p, 3d, 4d, 5s 3d,4p,4s,4d,5s Solution :As per AUFBAU principle

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