Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Lithium exhibits chemical reactivity characteristic of the alkali metal family, governed by an electronegativity of 0.98 and standard valence interactions.
Z = 3Alkali Metal
Launch 3D Atom & Orbitals LabLithium
Li
Standard Atomic Mass: 6.941 u
Period 2Group 1S-Block
Chemical Specimen/Li
Concentric Electron Shells2 Energy Levels
n=1: 2e⁻→
n=2: 1e⁻
Scientific Monograph • Alkali Metal
3D Atom SimulatorLithium (Li) Scientific Profile
Lithium (Li) is an element with atomic number 3, classified as a alkali metal. Positioned in Period 2, Group 1, and S-block, its chemical and physical profile is defined by its electron configuration ([He]2s¹) and periodic trends.
Interactive Virtual Labs Available for Lithium
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
[He]2s¹
Electronegativity
0.98 Pauling
Year Discovered
1817
Orbital Shells
2 Principal Levels
Orbital Block
s-block orbital
Group / Period
G: 1 • P: 2
Technological Utility
Industrial & Energy Applications
Lithium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Lithium 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 Lithium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Lithium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Lithium
Q
What are the key physical and atomic properties of Lithium?
Lithium (Li) has an atomic number of 3 and a standard atomic mass of 6.941 u. It is positioned in Period 2, Group 1, in the S-block, and is classified within the Alkali Metal category.
Q
What is the electron configuration of Lithium?
The ground-state electron configuration of Lithium is [He]2s¹. Its 3 electrons are distributed across 2 principal energy levels (2, 1).
Q
Why does Lithium exhibit an electron configuration exception?
Lithium 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 Lithium?
Lithium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.