Reactivity & Chemical Bonding
Chemical Behavior & Oxidation States
Gallium exhibits chemical reactivity characteristic of the post transition family, governed by an electronegativity of 1.81 and standard valence interactions.
Z = 31Post-Transition Metal
Launch 3D Atom & Orbitals LabGallium
Ga
Standard Atomic Mass: 69.723 u
Period 4Group 13P-Block
Chemical Specimen/Ga
Concentric Electron Shells4 Energy Levels
n=1: 2e⁻→
n=2: 8e⁻→
n=3: 18e⁻→
n=4: 3e⁻
Scientific Monograph • Post-Transition Metal
3D Atom SimulatorGallium (Ga) Scientific Profile
Gallium (Ga) is an element with atomic number 31, classified as a post transition. Positioned in Period 4, Group 13, and P-block, its chemical and physical profile is defined by its electron configuration ([Ar]3d¹⁰4s²4p¹) and periodic trends.
Interactive Virtual Labs Available for Gallium
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
[Ar]3d¹⁰4s²4p¹
Electronegativity
1.81 Pauling
Year Discovered
1875
Orbital Shells
4 Principal Levels
Orbital Block
p-block orbital
Group / Period
G: 13 • P: 4
Technological Utility
Industrial & Energy Applications
Gallium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.
Biological Role
Biomedical Profile & Toxicity
Gallium 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 Gallium are synthesized through stellar nucleosynthesis and supernovae r-processes. On Earth, Gallium is concentrated in specific ore deposits or synthesized in nuclear accelerators.
Frequently Asked Questions about Gallium
Q
What are the key physical and atomic properties of Gallium?
Gallium (Ga) has an atomic number of 31 and a standard atomic mass of 69.723 u. It is positioned in Period 4, Group 13, in the P-block, and is classified within the Post-Transition Metal category.
Q
What is the electron configuration of Gallium?
The ground-state electron configuration of Gallium is [Ar]3d¹⁰4s²4p¹. Its 31 electrons are distributed across 4 principal energy levels (2, 8, 18, 3).
Q
Why does Gallium exhibit an electron configuration exception?
Gallium 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 Gallium?
Gallium is utilized in industrial fabrication, materials engineering, electronic manufacturing, and advanced laboratory research based on its specific thermodynamic properties.