. . "Madelung principle" . "Aufbau principle#Madelung%20energy%20ordering%20rule" . "Madelung energy ordering rule" . . . "Aufbau principle#The Madelung energy ordering rule" . "the n+\u2113 energy ordering rule" . "''aufbau'' approximation" . . . . "Aufbau principle#Madelung energy ordering rule" . "Aufbau principle" . . "Madelung rule" . "order" . . "Aufbau" . "Aufbau principle" . "Madelung's rule" . . . . . "aufbau principle" . "Madelung energy-ordering rule" .