CESIUM

HISTORY

• When it was discover- 1860
• Where it was discovered- Durkheim, Germany
• Who discovered it- Robert Bunsen & Gustav Kirchhoff

HISTORY

• What it was used for then- the "getter" in
• Vacuum tubes.
• Name-- origin, language, symbol
• Cesium, Latin word Ceasius meaning bright blue
• Cs.

SOURCES

• Countries- Germany, Northern parts of Asia
• It is now mined in Germany
• Process- Crushed, hand- sorted, ground, extracted
• from pollucite, goes through acid digestion,
• Alkaline decomposition, and direct reduction.

SOURCES

• Cesium is not abundant,
• and is not rare. It isn't common
• but can still be found fairly easily.

PROPERTIES

• In the physical state, it is a solid.
• Melting point- 28.44 degrees Celsius
• and 83.19 degrees Fahrenheit.
• Boiling point- 28 degrees Celsius
• and 82 degrees Fahrenheit.

PROPERTIES

• Cesium is reactive
• Most reactive with water or
• pyrophoric.

PROPERTIES

• Other properties-
• First element to be discovered
• spectroscopically.

PROPERTIES

• It is similar to one of many that are
• very similar
• Cesium is worth $30 per gram.

PROPERTIES

• This wasn't around during
• ancient civilization times, but
• elder people like in the 1800's
• used cesium.

USES

• Cesium is used to help remove air
• traces in vacuum tubes.
• Which means that it will help keep
• gases and air out of the vacuum tubes.

USES

• Another use is for atomic clocks,
• and for medical uses.
• For medical uses it is taken orally
• to treat cancer.