gallium: Quick Facts

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Nov. 3, 2026

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Facts

Also Known As	Ga

Photos

A labeled diagram of the periodic table entry for gallium, showing its atomic number 31, symbol Ga, atomic weight 69.723, electron configuration, solid state at room temperature, orthorhombic crystal structure, and classification as an other metal.

Gallium crystals

Line graph showing the first ionization energies of the elements as a function of atomic number, with peaks at noble gases like helium, neon, argon, krypton, xenon, and radon, and labeled elements at key points.

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Topics

chemical element boron group element hydrogen carbon sodium nitrogen sulfur phosphorus boron iodine fluorine zinc

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Key People

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Paul-Émile Lecoq de Boisbaudran

French chemist

Periodic table of the elements. Left column indicates the subshells that are being filled as atomic number Z increases. The body of the table shows element symbols and Z. analysis and measurement

Periodic Table of the Elements

Concept artwork on the periodic table of elements.

118 Names and Symbols of the Periodic Table Quiz

Periodic Table of the elements concept image (chemistry)

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