| ChemGlobe: Gallium: Electronic, thermal, and steric data along with an isotope table. |
| ChemicalElements.com: Gallium: Basic information, atomic structure, and isotopes. |
| Discovery of Gallium: Article by P.E. Lecoq de Boisbaudran. |
| EnvironmentalChemistry.com: Gallium: Atomic structure, chemical and physical properties, and table of nuclides. |
| Gallium: Data tables and historic information. |
| It's Elemental: Gallium: Basic physical and historical information. |
| LANL: Gallium: Sources, properties, uses, and costs. |
| Lenntech: Gallium: Physical data, chemical properties, health and environmental effects. |
| USGS Minerals Information: Gallium: Statistics and information on the worldwide supply, demand, and flow of the element. [PDF] |
| Visual Elements: Gallium: General and physical information, key isotopes, and ionisation energies. |
| WebElements: Gallium: Extensive information on history, uses, occurrence, compounds, and properties of the element. |
| Wikipedia: Gallium: Properties of the element, including its history, applications, and characteristics. |
Classical
