On this page I'll provide comprehensive data for Cesium. I hope you profit from it.
Cesium Overview
Name Origin
Latin: coesius (sky blue); for the blue lines of its spectrum.
Symbol
Cs (Cesium)Description
Very soft, light gray, ductile metal.
Discovery
Discovered By: Gustov Kirchoff, Robert Bunsen
Year: 1860
Location: Germany
Sources
Found in pollucite [(Cs4Al4Si9O26).H2O] and as trace in lepidolite.
Uses
Used as a 'getter' to remove air traces in vacuum and cathode-ray tubes. Also used in producing photoelectric devices and atomic clocks. Since it ionizes readily, it is used as an ion rocket motor propellant.
State at 20 °C
Solid
Group
Group Name: Alkali MetalÂ
Group in periodic table: 1a
Period in periodic table:Â 6
Atomic Number
55Learn more about the atomic number.
Atomic Mass
132,90543
Learn more about the atomic mass.
Stable Isotopes
Cs133percent abundance: 100%
Learn more about stable isotopes.
Radioactive Isotopes
Cs129-132, Cs134-137
Learn more about radioactive isotopes.
Atomic Structure
Crystalline Structure
Cubic: Body centered
Learn more about crystalline structure
Shells
Electrons per energy level: 2,8,18,18,8,1
Learn more about electron shells
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4 s2 3 d10 4 p6 5 s2 4 d10 5 p6 6 s1
Learn more about electron configuration.
Abbreviated Configuration
[Xe] 6s1
Learn more about abbreviated electron configuration.
Valence Electrons
1
Learn more about valence electrons
Atom Size
Atomic Radius
3.34 Ã…
Learn more about atomic radius.
Covalent Radius
2.35 Ã…
Learn more about covalent radius.
Ionic Radius
1.74 (+1) Ã…
Learn more about ionic radius.
Molar Volume
71.07 cm³/mol
Learn more about molar volume.
Chemical Properties
Common Oxidation States
First Ionization Energy
First Ionization Potential
Second Ionization Potential
Third Ionization Potential
Physical Properties
Density
Electrical Conductivity
Thermal Conductivity
Elastic Modulus
Coefficient of Thermal Expansion
Learn more about coefficient of thermal expansion.
Heat Properties
Other heat related physical properties:
Melting Point
Boiling Point
Specific Heat
0.24 J/gK
Learn more about specific heat.
Learn more about specific heat.
Heat of Fusion
2.092 kJ/mol
Learn more about heat of fusion.
Heat of Vaporization
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Along with basic element information, it also comes with color coded info about: State (Gas, Liquid or Solid at room temperature), Groups/series details and much more...
How about an incentive to share this post? (You will help other colleagues find this blog)
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