Periodic Table · element

Gallium

Ga · Z 31

atomic number

31

atomic mass

69.723

notation

Ga

group

13: Boron

period

4

state0c

Solid

state20c

Solid

occurrence

Primordial

density

5.91

melting pt

29.76

boiling pt

2204

discovered

1875

abundance

19

ore grade

50

ore minerals

in bauxite, at tens of ppm

mined as

By-product

extraction

Extracted from the caustic Bayer liquor of alumina refineries by ion exchange or electrolysis; no gallium mine has ever existed.

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From the All Periodical Elements database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.