13
Aluminum
Atomic Number13
Atomic Mass26.982 u
CategoryPost-Transition
State at Room TempSolid
Year Discovered1825
About Aluminum
The most abundant metal in Earths crust. Was once more valuable than gold. Napoleon III served his most honored guests with aluminum plates. The Hall-Heroult process in 1886 made it affordable. Used in cans, foil, airplanes, and power lines. Recycling saves 95% of the energy needed to produce new aluminum.
More Post-Transitions
31
Gallium
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49
Indium
Named for its indigo blue spectral line. Indium tin oxide is the transparent con...
50
Tin
Used since the Bronze Age to make bronze with copper. Tin cans were invented in ...
82
Lead
One of the earliest metals smelted by humans. Dense, soft, and easy to work with...