Ameritsiy

95
Am
Guruh
Nomaʼlum
Davr
7
Block
f
Protonlar
Elektronlar
Neytronlar
95
95
148
General Properties
Atom raqami
95
Atom massasi
[243]
Mass Number
243
Turkum
Aktinoidlar
Ranggi
Silver
Radioaktivlik
Ha
Named after America
Crystal Structure
Simple Hexagonal
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.
Electrons per shell
2, 8, 18, 32, 25, 8, 2
Elektron konfiguratsiyasi
[Rn] 5f7 7s2
Am
Americium often enters landfills from discarded smoke detectors
Physical Properties
Phase
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
Heat of Fusion
Nomaʼlum
Heat of Vaporization
Nomaʼlum
Solishtirma issiqlik sigʻimi
-
Abundance in Earth's crust
Nomaʼlum
Abundance in Universe
Nomaʼlum
A
Image Credits: Wikimedia Commons (Bionerd)
A small disc of Am-241 under the microscope
CAS Number
7440-35-9
PubChem CID Number
Nomaʼlum
Atomic Properties
Atom radiusi
173 pm
Kovalentlik radiusi
180 pm
Elektrmanfiylik
1,3 (Poling boʻyicha)
Ionization Potential
5,9738 eV
Molyar hajm
17,78 cm3/mol
Issiqlik oʻtkazuvchanlik
0,1 W/cm·K
Oksidlanish darajasi
2, 3, 4, 5, 6
Applications
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 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