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table of Elements
Cesium
Cesium X-ray photoelectron spectra, cesium electron configuration, and other elemental information.
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Cesium • Alkali Metal
Primary XPS region: Cs3d
Overlapping regions: N/A
Binding energies of common chemical states:
| Chemical state | Binding energy Cs3d5/2 |
|---|---|
| Csl | 724 eV |
Experimental information
N/A
Interpretation of XPS spectra
- Cs3d region has well-separated spin-orbit components (Δ=14.0eV).
- Loss features may be observed in the Cs3d reigion at 730eV and 745eV.
General comments
- Commonly used in SIMS analysis and may be observed if samples have been investigated using this technique.
About this element
Symbol: Cs
Date of discovery: 1860
Name origin: Latin caesius
Appearance: silver
Discoverer: Fustov Kirchoff
Obtained from: pollucite, lepidolite
Melting point: 28.5 K
Boiling point: 678.4 K
Density[kg/m3]: 1.873
Molar volume: 70.94 × 10-6 m3/mol
Protons/Electrons: 55
Neutrons: 78
Shell structure: 2,8,18,18,8,1
Electron configuration: [Xe]6s1
Oxidation state: 1
Crystal structure: cubic
Cesium, also spelled caesium, is a silvery gold metal that is liquid at or around room temperature. This element’s name is derived from the Latin caesius, meaning sky blue. Cesium reacts explosively with water. Cesium hydroxide is a very strong base that can rapidly etch the surface of glass. The most widespread use of cesium is in drilling fluids for the oil industry which mitigates the necessity of toxic suspended solids in drilling fluids. Cesium is also used in atomic clocks, in particular its isotope of atomic weight 133 (Cs-133).
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