Seziy
55
Cs
Guruh
1
Davr
6
Block
s
Protonlar
Elektronlar
Neytronlar
55
55
78
General Properties
Atom raqami
55
Atom massasi
132,9054519
Mass Number
133
Turkum
Ishqoriy metallar
Ranggi
Silver
Radioaktivlik
Ha
From the Latin word caesius, sky blue
Crystal Structure
Body Centered Cubic
Tarix
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.
Electrons per shell
2, 8, 18, 18, 8, 1
Elektron konfiguratsiyasi
[Xe] 6s1
Cesium was the first element discovered using a spectroscope
Physical Properties
Phase
Qattiq modda
Zichlik
1,873 g/cm3
Erish harorati
301,59 K | 28,44 °C | 83,19 °F
Qaynash harorati
944,15 K | 671 °C | 1239,8 °F
Heat of Fusion
2,09 kJ/mol
Heat of Vaporization
65 kJ/mol
Solishtirma issiqlik sigʻimi
0,242 J/g·K
Abundance in Earth's crust
0,00019%
Abundance in Universe
8×10-8%
CAS Number
7440-46-2
PubChem CID Number
5354618
Atomic Properties
Atom radiusi
265 pm
Kovalentlik radiusi
244 pm
Elektrmanfiylik
0,79 (Poling boʻyicha)
Ionization Potential
3,8939 eV
Molyar hajm
71,07 cm3/mol
Issiqlik oʻtkazuvchanlik
0,359 W/cm·K
Oksidlanish darajasi
-1, 1
Applications
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
Izotoplar
Barqaror izotoplar
133CsBeqaror izotoplar
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