Using Fig. 12.29, list elements (ignore the lanthanides and actinides) that have ground-state electron configurations that differ from those we would expect from their positions in the periodic table.

 Fig. 12.29

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1 Is 3 5 1A 6 Period 4 4s 7 2s 3s 2A Ss 6s La 7s Ac 3d Ad 5d 6d Group 4f 5f 3A 4A 5A 6A 7A 2р Зр 4p 5p бр 7p 8A 1s