Ameritsiy
95
Am
Guruh
Nomaʼlum
Davr
7
Blok
f
Protonlar
Elektronlar
Neytronlar
95
95
148
Umumiy xususiyatlar
Atom raqami
95
Atom massasi
[243]
Mass raqami
243
Turkum
Aktinoidlar
Ranggi
Kumush
Radioaktivlik
Ha
Named after America
Kristall tuzilma
Oddiy olti burchakli
Tarix
Americium-241 was first identified in 1944 by Glenn T. Seaborg, Ralph A. James, Leon O. Morgan and Albert Ghiorso at the metallurgical laboratory at the University of Chicago.
It was produced by irradiating plutonium with neutrons during the Manhattan Project.
Americium was first isolated as a pure compound by Burris Cunningham in 1945, at the University of Chicago.
It was produced by irradiating plutonium with neutrons during the Manhattan Project.
Americium was first isolated as a pure compound by Burris Cunningham in 1945, at the University of Chicago.
Qobiqdagi elektronlar soni
2, 8, 18, 32, 25, 8, 2
Elektron konfiguratsiyasi
[Rn] 5f7 7s2
Americium often enters landfills from discarded smoke detectors
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
13,69 g/cm3
Erish harorati
1449,15 K | 1176 °C | 2148,8 °F
Qaynash harorati
2880,15 K | 2607 °C | 4724,6 °F
Eritish issiqligi
Nomaʼlum kJ/mol
Bugʻlanish issiqligi
Nomaʼlum kJ/mol
Solishtirma issiqlik sigʻimi
- J/g·K
Yer po‘stidagi miqdori
Nomaʼlum
Olamdagi miqdori
Nomaʼlum
CAS raqami
7440-35-9
PubChem CID raqami
Nomaʼlum
Atom xususiyatlari
Atom radiusi
173 pm
Kovalentlik radiusi
180 pm
Elektrmanfiylik
1,3 (Poling boʻyicha)
Ionlashish potensiali
5,9738 eV
Molyar hajm
17,78 cm3/mol
Issiqlik oʻtkazuvchanlik
0,1 W/cm·K
Oksidlanish darajasi
2, 3, 4, 5, 6
Qo‘llanilish sohalari
Americium is used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges.
Americium-241 has been used as a portable source of both gamma rays and alpha particles for a number of medical and industrial uses.
It is also used as a target material in nuclear research to make even heavier elements.
Americium-241 has been used as a portable source of both gamma rays and alpha particles for a number of medical and industrial uses.
It is also used as a target material in nuclear research to make even heavier elements.
Americium is harmful due to its radioactivity
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
229Am, 231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am