In this video, we dive into the four key principles that govern how electrons fill atomic orbitals. Understanding these rules is essential to writing accurate electron configurations and truly grasping atomic structure.
We’ll cover:
🔒 Pauli Exclusion Principle: Why no two electrons in an atom can have the same quantum state.
⬇️ Aufbau Principle: The order in which orbitals are filled — from lower to higher energy.
🔁 Hund’s Rule: How electrons spread out across orbitals before pairing up.
⚖️ Stability of Half-Filled and Fully-Filled Orbitals: Why certain configurations are especially stable.
Using clear examples and visual aids, this lesson is perfect for students in senior high school, college, or anyone looking to strengthen their understanding of electron configurations.