!Thulium!

Thulium™

168.93

Period: 6

Group: 16

69

Self Portrait

Thulium (x999,999,999, etc.)

Physical Properties

• Standard State: Solid

• Density: 9.32 g/cm^3

• Melting Point: (1545 C)(2813 F)

• Boiling Point: (1950 C)(3542 F)

-chemical-elements.findthedata.org

Has a luminesce and silver color

The metal is soft -Wikipedia

Chemical Properties

• Tarnishes slowly in air

• Burns at 150 C to form thulium oxide

• Reacts with all halogens

• Dissolves in sulfuric acid

-Wikipedia

Uses

• Portable X-rays

• Lasers

• Nuclear Reactors

• Microwave Equipment

-Wikipedia

History

• Thulium was discovered by Per Teodor Cleve in 1879

• Thulium was so rare, early workers didn’t have enough to purify it into it’s green color

• Charles James was the first to obtain nearly pure thulium

• The price was $13,300 per kg in 1998-Wikipedia

Isotopes

Thulium’s only isotope is Thulium-169

Interesting Facts

• It was named after Thule, the ancient name for Scandinavia

• It is the rarest of the Lanthanides

• It can be cut with a knife

• Thulium has very few uses

• One of the most obscure elements in the periodic table