When writing the ground state electron configuration of an atom, orbitals are filled according to increasing energy (Aufbau rule), generally in the following order:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p.
Some elements, though, don't follow the Aufbau rule due to the increased stability of a half-filled or fully filled d-subshell.
Which of the following elements have ground state electron configurations that are exceptions to the Aufbau rule?CdCuCoMn