Caesium

Discovered
1860
Density
1.9 g/cm3
Melts
28 °C
  • 83 °F
  • 301 °K
Boils
673 °C
  • 1244 °F
  • 946 °K

Contributed by collector B.W.

1 gram of solidified Cesium in an ampoule, resting on a clear folding stand

Contributed by collector no. 2

Cesium in a cube shaped glass ampoule

Contributed by @plazmatter0430

Color comparison between a 0.5 gram bar of Gold and brassy Caesium in an ampoule

Contributed by @plazmatter0430

Cesium in an ampoule; in front of a black, white, and light gray surface

Contributed by collector no. 3

The Alkali Metals group: Lithium rod, Sodium , Potassium , Rubidium , and Caesium . All samples are inside ampoules, because these elements are extremely reactive to the Oxygen in air.

Contributed by collector B.W.

A very small sample of Caesium metal in an ampoule, which itself is in a clear container

Contributed by collector no. 3

1 gram of Cesium metal in a sealed ampoule. Cesium is an extremely reactive, slightly brassy gold metal with a melting point a little above room temperature.

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