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Aufbau Principle Or Aufbau Rule Royalty-Free Stock Photography

Title

Aufbau principle or Aufbau rule #250967039

Description

The aufbau principle, from the German Aufbauprinzip, also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill subshells of the lowest available energy, then they fill subshells of higher energy. For example, the 1s subshell is filled before the 2s subshell is occupied.