WebElements Periodic Table of the Elements | Caesium

Caesium: physical properties

Temperatures

Melting point: 301.59 [or 28.44 °C (83.19 °F)] K
Boiling point: 944 [or 671 °C (1240 °F)] K (liquid range: 642.41 K
Critical temperature: 1938 [or 1665 °C (3029 °F)] K
Superconduction temperature: no data K

States at 298 K

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Expansion and conduction properties

Thermal conductivity: 36 W m^-1 K^-1
Coefficient of linear thermal expansion: no data x 10^-6 K^-1

Bulk properties

Density of solid: 1879 kg m^-3
Molar volume: 70.94 cm³
Velocity of sound: no data m s^-1

Elastic properties

Youngs modulus: 1.7 GPa
Rigidity modulus: no data GPa
Bulk modulus: 1.6 GPa
Poissons ratio: no data (no units)

Hardnesses

Mineral hardness: 0.2 (no units)
Brinell hardness: 0.14 MN m^-2
Vickers hardness: no data MN m^-2

Electrical properties

Electrical resistivity: 20 10^-8 Ω m; or mΩ cm

Optical properties

Reflectivity: no data %
Refractive index: no data (no units)

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Caesium
- Essential data: names, symbol, atomic number, and atomic weight; block, period, and group in periodic table; description; standard state; registry number; and isolation
- History: meaning of name; discovery; and history of the element
- Find a property
Caesium around us
- Uses
- Geology: Abundance of elements in the universe; the sun; meteorites; Earth's crust; oceans; and streams
- Biology: Abundance in humans; biological role; and health hazards)
Caesium compounds
- Compounds: halides, oxides, sulfides, hydrides, and complexes; lattice energies; and reduction potentials
- Electronegativities: Pauling; Sanderson; Allred Rochow; Mulliken-Jaffe; and Allen
- Bond enthalpies of diatomic species
- Lattice energies
Element properties
- Physics properties: Boiling point; melting point; density; molar volume; thermal conductivity; and electrical resistivity; bulk modulus; critical temperature; superconductivity temperature; hardness (mineralogical, Brinell, and Vickers); linear expansion coefficient; Poisson's ratio; reflectivity; refractive index; rigidity modulus; Young's modulus; velocity of sound
- Images
- Reactions of calcium: reactions of caesium with air; water; halogens; acids; and bases
- Crystal structure
- Thermochemistry: enthalpies of atomization, fusion, and vaporization; thermodynamic properties
Atom properties
- Electron shell properties: Electronic configuration; term symbol; electron affinity; ionization energies; and atomic spectra
- Atom sizes: atomic radius; Shannon and Pauling ionic radii; covalent radius; metallic radius; element bond length; and Van der Waals radius
- Atomic orbital properties: effective nuclear charge; electron binding energies; and valence orbital radii maxima
Nuclear properties
- Isotopes: isotope abundances; radioactive isotopes; isotope masses; nuclear spins; and nuclear magnetic moment
- NMR properties: frequencies; isotopes; magnetogyric ratios; quadrupole moments; receptivities; and relative sensitivities

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