ChemistryWiki | Filling Electrons Into Subenergy Level | RecentChanges | Preferences
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Three Rules for Filling Electrons into Subenergy Levels/orbitals to make Electron Configuration
1. Aufbau Principle:
2. Pauli Exclusion Principle: (actually not what he said)
a.
b.
3. Hund's Rule:
Let us try one:
Li (3e-):
O (8e-):
From now on, you will expand last subenergy levels into orbitals.
Example 3:
Example 4:
Homework Electron Configuration Homework