The periodic table can be used to work out the order in which the sub-levels are filled
CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The periodic table can be used to work out the order in which the sub-levels are filled, although using this does not work for the elements that are exceptions to the Aufbau rules. Describe the relationship between the period number of an element and its electron configuration.