Seriy
58
Ce
Guruh
Nomaʼlum
Davr
6
Blok
f
Protonlar
Elektronlar
Neytronlar
58
58
82
Umumiy xususiyatlar
Atom raqami
58
Atom massasi
140,116
Mass raqami
140
Turkum
Lantanoidlar
Ranggi
Kumush
Radioaktivlik
Yoʻq
Cerium was named for the asteroid Ceres
Kristall tuzilma
Oddiy olti burchakli
Tarix
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.
Qobiqdagi elektronlar soni
2, 8, 18, 19, 9, 2
Elektron konfiguratsiyasi
[Xe] 4f1 5d1 6s2
Seawater contains 1.5 parts per trillion of cerium
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
6,77 g/cm3
Erish harorati
1068,15 K | 795 °C | 1463 °F
Qaynash harorati
3716,15 K | 3443 °C | 6229,4 °F
Eritish issiqligi
5,5 kJ/mol
Bugʻlanish issiqligi
350 kJ/mol
Solishtirma issiqlik sigʻimi
0,192 J/g·K
Yer po‘stidagi miqdori
0,006%
Olamdagi miqdori
1×10-6%
CAS raqami
7440-45-1
PubChem CID raqami
23974
Atom xususiyatlari
Atom radiusi
182 pm
Kovalentlik radiusi
204 pm
Elektrmanfiylik
1,12 (Poling boʻyicha)
Ionlashish potensiali
5,5387 eV
Molyar hajm
20,67 cm3/mol
Issiqlik oʻtkazuvchanlik
0,114 W/cm·K
Oksidlanish darajasi
2, 3, 4
Qo‘llanilish sohalari
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
Izotoplar
Barqaror izotoplar
136Ce, 138Ce, 140Ce, 142CeBeqaror izotoplar
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