Aufbau Principle Diagram. The aufbau principle is illustrated in the diagram by following each red arrow in order from top to bottom. It is written 1s 1.
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A diagram illustrating the order in which atomic orbitals are filled is provided below. An element s electron configuration can be represented using energy level diagrams or aufbau diagrams. For example the 1s subshell is filled before the 2s subshell is occupied.
As a result of this hydrogen has unique energy levels.
The next two would fill the 2s orbital leaving the remaining four electrons to take spots in the 2p orbital. For example oxygen has eight protons and eight electrons. A diagram illustrating the order in which atomic orbitals are filled is provided below. 1s 2 2s 2 p 4.
