Thallium

Discovered

1861

Density

12 g/cm³

Melts

304 °C

579 °F
577 °K

Boils

1468 °C

2674 °F
1741 °K

Show sources

University of Colorado Boulder

Harper College

PubChem (NIH.gov)

Contributed by @plazmatter0430

A small chunk of Thallium in a bottle under oil

Contributed by collector no. 3

Boron group: amorphous brown Boron powder, dark crystalline Boron , a bottle of Aluminum slugs, Gallium pellets, thick Indium wire, and a small piece of Thallium metal

Contributed by collector no. 3

Small piece of dull gray Thallium metal in an ampoule, itself in a bottle. Despite looking innocent, Thallium is arguably the most poisonous chemical element, even more so than Arsenic . Even holding this metal is a terrible idea, because it can get through your skin!

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