Samariy
62
Sm
Guruh
Nomaʼlum
Davr
6
Blok
f
Protonlar
Elektronlar
Neytronlar
62
62
88
Umumiy xususiyatlar
Atom raqami
62
Atom massasi
150,36
Mass raqami
150
Turkum
Lantanoidlar
Ranggi
Kumush
Radioaktivlik
Yoʻq
From samarskite, a mineral named after Russian mine official, Col. Samarski
Kristall tuzilma
Oddiy trigonal
Tarix
In 1853, Jean Charles Galissard de Marignac discovered samarium when he found lines in mineral spectra.
Paul Émile Lecoq de Boisbaudran isolated a samarium salt in Paris in 1879 from the mineral samarskite and identified a new element in it via sharp optical absorption lines.
The pure element was produced only in 1901 by Eugène-Anatole Demarçay.
Paul Émile Lecoq de Boisbaudran isolated a samarium salt in Paris in 1879 from the mineral samarskite and identified a new element in it via sharp optical absorption lines.
The pure element was produced only in 1901 by Eugène-Anatole Demarçay.
Qobiqdagi elektronlar soni
2, 8, 18, 24, 8, 2
Elektron konfiguratsiyasi
[Xe] 4f6 6s2
Samarium metal can be produced by reducing the oxide with lanthanum
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
7,52 g/cm3
Erish harorati
1345,15 K | 1072 °C | 1961,6 °F
Qaynash harorati
2067,15 K | 1794 °C | 3261,2 °F
Eritish issiqligi
8,6 kJ/mol
Bugʻlanish issiqligi
175 kJ/mol
Solishtirma issiqlik sigʻimi
0,197 J/g·K
Yer po‘stidagi miqdori
0,0006%
Olamdagi miqdori
5×10-7%
CAS raqami
7440-19-9
PubChem CID raqami
23951
Atom xususiyatlari
Atom radiusi
180 pm
Kovalentlik radiusi
198 pm
Elektrmanfiylik
1,17 (Poling boʻyicha)
Ionlashish potensiali
5,6437 eV
Molyar hajm
20,0 cm3/mol
Issiqlik oʻtkazuvchanlik
0,133 W/cm·K
Oksidlanish darajasi
2, 3
Qo‘llanilish sohalari
Samarium's main use is in samarium-cobalt alloy magnets for headphones, small motors and pickups for some electric guitars.
Radioactive samarium-153 is used to kill cancer cells in the treatment of lung cancer, prostate cancer, breast cancer and osteosarcoma.
Samarium and its compounds are also used as catalyst and chemical reagent.
Radioactive samarium-153 is used to kill cancer cells in the treatment of lung cancer, prostate cancer, breast cancer and osteosarcoma.
Samarium and its compounds are also used as catalyst and chemical reagent.
Samarium is considered to be moderately toxic
Izotoplar
Barqaror izotoplar
144Sm, 149Sm, 150Sm, 152Sm, 154SmBeqaror izotoplar
128Sm, 129Sm, 130Sm, 131Sm, 132Sm, 133Sm, 134Sm, 135Sm, 136Sm, 137Sm, 138Sm, 139Sm, 140Sm, 141Sm, 142Sm, 143Sm, 145Sm, 146Sm, 147Sm, 148Sm, 151Sm, 153Sm, 155Sm, 156Sm, 157Sm, 158Sm, 159Sm, 160Sm, 161Sm, 162Sm, 163Sm, 164Sm, 165Sm