Gallium (Ga), element 31 – Learn Acer periodic table

Transition metal, atomic number 31.

Gallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in free form in nature, but as the gallium(III) compounds that are in trace amounts in zinc ores and in bauxite. Gallium is a soft, silvery metal, and elemental gallium is a brittle solid at low temperatures, and melts at 29.76 °C (85.57 °F) (slightly above room temperature).

Symbol Ga. Atomic mass 69.7231 u. Group 13, period 4. Electron configuration [Ar] 3d10 4s2 4p1. Electrons per shell 2, 8, 18, 3. State at room temperature: Solid. Melting point 29.8 °C, boiling point 2399.8 °C. Discovered by Lecoq de Boisbaudran.

Element data from Wikipedia, CC BY-SA 3.0.

Gallium (Ga), element 31 – Learn Acer periodic table

Gallium

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