Electron Configuration
| Formula / Notation | e.g., Na: 1s²2s²2p⁶3s¹ or [Ne]3s¹; uses Aufbau, Pauli, Hund's rules |
|---|---|
| Also Known As | Electronic configuration, orbital filling, ground state electron configuration |
What is Electron Configuration?
The distribution of electrons in an atom among its atomic orbitals, following the Aufbau principle, Pauli exclusion principle, and Hund's rule. Written using orbital notation (e.g., 1s²2s²2p⁶), electron configurations determine chemical properties and reactivity.
Formula & Notation
Other Names / Synonyms: Electronic configuration, orbital filling, ground state electron configuration
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The distribution of electrons in an atom among its atomic orbitals, following the Aufbau principle, Pauli exclusion principle, and Hund's rule. Written using orbital notation (e.g., 1s²2s²2p⁶), electron configurations determine chemical properties and reactivity.
Electron configurations explain periodic trends (atomic radius, IE, EA), chemical reactivity, magnetic properties, and spectroscopic behaviour. They are fundamental to explaining why elements in the same group have similar chemistry and to the design of materials with specific electronic properties.
No direct safety hazard. Understanding electron configuration helps predict which elements are strong oxidisers (electron-deficient configs) or strong reducing agents (easily lose electrons), guiding safe chemical practice.
The formula or notation for Electron Configuration is: e.g., Na: 1s²2s²2p⁶3s¹ or [Ne]3s¹; uses Aufbau, Pauli, Hund's rules