Cerio
58
Ce
Grupo
Neniu
Perio
6
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
58
58
82
Ĝeneralaj Propraĵoj
Atoma Nombro
58
Atommaso
140,116
Amasa Nombro
140
Kategorio
Lantanoidoj
Koloro
Arĝento
Radioaktiva
Ne
Cerium was named for the asteroid Ceres
Kristala Strukturo
Simpla Sesangula
Historio
Jöns Jakob Berzelius and Wilhelm Hisinger discovered the element in ceria in 1803 in Sweden.
Klaproth discovered it simultaneously and independently in some tantalum samples in Germany.
Carl Gustaf Mosander, who worked closely with Berzelius, prepared metallic cerium in 1825.
Klaproth discovered it simultaneously and independently in some tantalum samples in Germany.
Carl Gustaf Mosander, who worked closely with Berzelius, prepared metallic cerium in 1825.
Elektronoj per ŝelo
2, 8, 18, 19, 9, 2
Elektrona Agordo
[Xe] 4f1 5d1 6s2
Seawater contains 1.5 parts per trillion of cerium
Fizikaj Propraĵoj
Fazo
Solido
Denso
6,77 g/cm3
Fandpunkto
1068,15 K | 795 °C | 1463 °F
Bolpunkto
3716,15 K | 3443 °C | 6229,4 °F
Varmo de Fuzio
5,5 kJ/mol
Varmo de Vaporiĝo
350 kJ/mol
Specifa Varmo Kapacito
0,192 J/g·K
Krusta Abundo
0,006%
Universa Abundo
1×10-6%
CAS Nombro
7440-45-1
PubChem Kunmetita Identiga Nombro
23974
Atomaj Propraĵoj
Atoma Radiuso
182 pm
Kovalenta Radiuso
204 pm
Elektronegativeco
1,12 (Pauling-skalo)
Potencialo de jonigo
5,5387 eV
Atoma Volumo
20,67 cm3/mol
Termika Kondukto
0,114 W/cm·K
Oksidaj Ŝtatoj
2, 3, 4
Aplikoj
Cerium is used in carbon-arc lighting, especially in the motion picture industry.
Cerium oxide is an important component of glass polishing powders and phosphors used in screens and fluorescent lamps.
Cerium compounds are also used in the manufacture of glass, both as a component and as a decolorizer.
Cerium oxide is an important component of glass polishing powders and phosphors used in screens and fluorescent lamps.
Cerium compounds are also used in the manufacture of glass, both as a component and as a decolorizer.
Cerium is considered to be moderately toxic
Izotopoj
Stabilaj Izotopoj
136Ce, 138Ce, 140Ce, 142CeMalstabilaj Isotopoj
119Ce, 120Ce, 121Ce, 122Ce, 123Ce, 124Ce, 125Ce, 126Ce, 127Ce, 128Ce, 129Ce, 130Ce, 131Ce, 132Ce, 133Ce, 134Ce, 135Ce, 137Ce, 139Ce, 141Ce, 143Ce, 144Ce, 145Ce, 146Ce, 147Ce, 148Ce, 149Ce, 150Ce, 151Ce, 152Ce, 153Ce, 154Ce, 155Ce, 156Ce, 157Ce