Element Gallium (Ga)

Atomic number 31 · metal · Atomic mass 69.723 u

Atomic Mass
69.7230 u
Element Properties
Atomic Number 31
Atomic Mass 69.7230 u
Category metal / 后过渡金属
Group 13
Period 4
Block P
Electron Configuration [Ar] 3d¹⁰ 4s² 4p¹
Electronegativity (Pauling) 1.81
Phase at STP Solid
Density 5.91 g/cm³
Year Discovered 1875

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