This site requires that javascript be enabled. Please configure your browser in the tools or configuration section.

Element Search

Cesium (55Cs132.9054)
[7440-46-2]

Select a form or compound to view products.

Elemental Form

The alkali metal cesium, is silvery-white, soft and ductile. It has the lowest melting point of any alkali metal. Cesium reacts violently with water and due to its reaction with oxygen, should be stored in the absence of air. Located in the lower left-hand corner of the periodic table, cesium is the most electropositive element and has the lowest ionization potential.
Melting Point28.4°CBoiling Point671°C
Density @ 18°C1.873g/cm3Specific Heat @ 20°C0.052cal/g°C
Heat of Fusion3.913cal/gHeat of Vaporization146cal/g
Atomic Volume70W/DFirst Ionization Energy90K-cal/g-mole
Electronegativity0.7Pauling'sCovalent Radius2.35Angstroms
Electrical Resistivity @ 20°C20.0µΩ-cmCrystal StructureCubic, body centered
Thermal Neutron Cross Section20.0barns/atomMagnetic Susceptibility0.10x10-6cgs
Ionization Potential3.893eV