Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Sodium exhibits chemical reactivity characteristic of the alkali metal family, governed by an electronegativity of 0.93 and standard valence interactions.
Z = 11Alkali Metal
Launch 3D Atom & Orbitals LabSodium
Na
Standard Atomic Mass: 22.99 u
Period 3Group 1S-Block
Chemical Specimen/Na
Concentric Electron Shells3 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 1e⁻
Scientific Monograph • Alkali Metal
3D Atom SimulatorSodium (Na) Scientific Profile
Sodium (Na) is an element with atomic number 11, classified as a alkali metal. Positioned in Period 3, Group 1, and S-block, its chemical and physical profile is defined by its electron configuration ([Ne]3s¹) and periodic trends.
Interactive Virtual Labs Available for Sodium
3D Orbitals & Valence Lab
Simulate concentric quantum energy levels, observe valence electron spins, and examine live atomic clouds in full 3D.
Electronic Configuration Lab
Experiment with Aufbau subshell ordering, explore orbital occupancy, and analyze quantum configuration exceptions.
Electron Config
[Ne]3s¹
Electronegativity
0.93 Pauling
Year Discovered
1807
Orbital Shells
3 Principal Levels
Orbital Block
s-block orbital
Group / Period
G: 1 • P: 3
Technological Utility
Industrial & Energy Applications
Sodium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Sodium does not play a prominent biological role in human biochemistry, existing primarily as a trace element or mineral component in natural ecosystems.
Geochemistry & Abundance
Cosmic & Terrestrial Occurrence
Elements like Sodium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Sodium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Sodium
Q
What are the key physical and atomic properties of Sodium?
Sodium (Na) has an atomic number of 11 and a standard atomic mass of 22.99 u. It is positioned in Period 3, Group 1, in the S-block, and is classified within the Alkali Metal category.
Q
What is the electron configuration of Sodium?
The ground-state electron configuration of Sodium is [Ne]3s¹. Its 11 electrons are distributed across 3 principal energy levels (2, 8, 1).
Q
Why does Sodium exhibit an electron configuration exception?
Sodium follows standard Aufbau principle orbital filling. Transition metals and heavy elements optimize their shell filling based on subshell exchange energy and electrostatic stability.
Q
What are the primary commercial and laboratory uses of Sodium?
Sodium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.