Electron Configuration Rules: Aufbau & Pauli Exclusion Principle, Hund's Rule

This video tutorial explains the three fundamental rules for writing electron configurations: the Aufbau principle, Hund's rule, and the Pauli exclusion principle. The Aufbau principle states that electrons fill lower energy levels first. Hund's rule emphasizes that electrons prefer to be unpaired in orbitals when possible. The Pauli exclusion principle requires that electrons in the same orbital have opposite spins. Understanding these rules is crucial for correctly writing electron configurations.

What are the three main rules governing electron configurations?

What is the Off ball principle and how does it affect the order of filling electron energy levels?

How does the concept of energy levels influence the writing of electron configurations?

Explain Hun's rule and its significance in electron configuration.

Describe the Pauli exclusion principle and its implications for electron pairing in orbitals.