Cezio
55
Cs
Grupo
1
Perio
6
Bloko
s
Protonoj
Elektronoj
Neŭtronoj
55
55
78
Ĝeneralaj Propraĵoj
Atoma Nombro
55
Atommaso
132,9054519
Amasa Nombro
133
Kategorio
Alkalaj metaloj
Koloro
Arĝento
Radioaktiva
Jes
From the Latin word caesius, sky blue
Kristala Strukturo
Korpo Centrita Kubo
Historio
Robert Bunsen and Gustav Kirchhoff were the first to suggest finding cesium in 1860 by spectrum analysis.
They discovered cesium by its two blue emission lines in a sample of Dürkheim mineral water.
The pure metal was eventually isolated by the German chemist Carl Setterberg while working on his doctorate with Kekulé and Bunsen.
They discovered cesium by its two blue emission lines in a sample of Dürkheim mineral water.
The pure metal was eventually isolated by the German chemist Carl Setterberg while working on his doctorate with Kekulé and Bunsen.
Elektronoj per ŝelo
2, 8, 18, 18, 8, 1
Elektrona Agordo
[Xe] 6s1
Cesium was the first element discovered using a spectroscope
Fizikaj Propraĵoj
Fazo
Solido
Denso
1,873 g/cm3
Fandpunkto
301,59 K | 28,44 °C | 83,19 °F
Bolpunkto
944,15 K | 671 °C | 1239,8 °F
Varmo de Fuzio
2,09 kJ/mol
Varmo de Vaporiĝo
65 kJ/mol
Specifa Varmo Kapacito
0,242 J/g·K
Krusta Abundo
0,00019%
Universa Abundo
8×10-8%
CAS Nombro
7440-46-2
PubChem Kunmetita Identiga Nombro
5354618
Atomaj Propraĵoj
Atoma Radiuso
265 pm
Kovalenta Radiuso
244 pm
Elektronegativeco
0,79 (Pauling-skalo)
Potencialo de jonigo
3,8939 eV
Atoma Volumo
71,07 cm3/mol
Termika Kondukto
0,359 W/cm·K
Oksidaj Ŝtatoj
-1, 1
Aplikoj
The radioactive isotope cesium-137 has a half-life of about 30 years and is used in medical applications, industrial gauges, and hydrology.
Cesium is also used in photoelectric cells and as a catalyst in the hydrogenation of organic compounds.
Cesium vapor thermionic generators are low-power devices that convert heat energy to electrical energy.
Cesium is also used in photoelectric cells and as a catalyst in the hydrogenation of organic compounds.
Cesium vapor thermionic generators are low-power devices that convert heat energy to electrical energy.
Cesium compounds are considered to be mildly toxic
Izotopoj
Stabilaj Izotopoj
133CsMalstabilaj Isotopoj
112Cs, 113Cs, 114Cs, 115Cs, 116Cs, 117Cs, 118Cs, 119Cs, 120Cs, 121Cs, 122Cs, 123Cs, 124Cs, 125Cs, 126Cs, 127Cs, 128Cs, 129Cs, 130Cs, 131Cs, 132Cs, 134Cs, 135Cs, 136Cs, 137Cs, 138Cs, 139Cs, 140Cs, 141Cs, 142Cs, 143Cs, 144Cs, 145Cs, 146Cs, 147Cs, 148Cs, 149Cs, 150Cs, 151Cs