E
Electron Configuration
AllChemicals — The Online Chemical Glossary | https://allchemicals.info/chemical/382-electron-configuration
What is Electron Configuration?
Electron configuration describes the distribution of electrons in an atom among its atomic orbitals. Electrons fill orbitals in order of increasing energy following the Aufbau principle, Hund's rule, and the Pauli exclusion principle. For example, the electron configuration of sodium (Z=11) is 1s²2s²2p⁶3s¹.
Key Facts
Term
Electron Configuration
Index
All "E" terms
Frequently Asked Questions
Electron configuration describes the distribution of electrons in an atom among its atomic orbitals. Electrons fill orbitals in order of increasing energy following the Aufbau principle, Hund's rule, and the Pauli exclusion principle. For example, the electron configuration of sodium (Z=11) is 1s²2s²2p⁶3s¹.
More "E" Terms
Effective Collisions
Effective Collisions
E ≥ Ea (activation energy required)
Effective Molality
m_eff = i × m (van't Hoff factor)
Effective Nuclear Charge
Z_eff = Z − σ (Slater's rules)
Efflorescence
Hydrated salt losing water in air: M·nH₂O(s) → M·(n-x)H₂O(s) + xH₂O(g)
Einsteinium
Es
Electrical Conductivity
κ = 1/ρ; Λm = κ/c
Electrochemical Cell
Galvanic cell: ΔG = −nFE_cell; Electrolytic cell: ΔG = +nFE_applied
Electrochemical Series
Arranged by E° (standard reduction potential); SHE: E° = 0.00 V
Electrochemistry
E° cell = E° cathode − E° anode | ΔG° = −nFE°
Electrochemistry
Electrode
View all "E" terms →