Electron Configuration Basics
10th Grade · Science · 45 min
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Learning Objective
I can write the electron configuration and draw molecular orbital diagrams for an atom using the Aufbau principle, Hund's Rule, and Pauli Exclusion Principle.
- 1
The Aufbau Principle states that when determining the electron configuration of an atom, you must build up from the lowest energy levels.
- 2
According to the Pauli Exclusion Principle, each orbital can hold a maximum of 2 electrons, which must have opposite spins.
- 3
Hund's Rule states that every orbital in a subshell gets one electron before any orbitals get two electrons, and all single electrons have parallel spin.
