electron configuration rule

Aufbau Principle

1. Electrons enter orbitals of low energy first

2. low energy orbitals are closer to the nucles

Pauli Exclusion Principle

1. No two electrons can have the same 4 quantum numbers

2. Two electron can be in the same orbital, but they will move differently

Hund’s Rule

1. Elections will enter each orbital until they’re half filled, then they fill with the opposite-spin electrons

2. Empty slots will fill first, then they will double up

bleh

bleh