Filling Up Electrons In Orbitals

Filling up electrons in orbitals

graph TD; A["Filling up electrons in orbitals"] --> B["Aufbau Principle"]; A --> C["Pauli Exclusion Principle"]; A --> D["Hund's Rule"]; B --> E["Electrons fill orbitals from lowest energy to highest"]; C --> F["Each orbital can hold 2 electrons with opposite spins"]; D --> G["Electrons fill each orbital singly before pairing up"];