Americio
95
Am
Grupo
Neniu
Perio
7
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
95
95
148
Ĝeneralaj Propraĵoj
Atoma Nombro
95
Atommaso
[243]
Amasa Nombro
243
Kategorio
Aktinoidoj
Koloro
Arĝento
Radioaktiva
Jes
Named after America
Kristala Strukturo
Simpla Sesangula
Historio
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.
Elektronoj per ŝelo
2, 8, 18, 32, 25, 8, 2
Elektrona Agordo
[Rn] 5f7 7s2
Americium often enters landfills from discarded smoke detectors
Fizikaj Propraĵoj
Fazo
Solido
Denso
13,69 g/cm3
Fandpunkto
1449,15 K | 1176 °C | 2148,8 °F
Bolpunkto
2880,15 K | 2607 °C | 4724,6 °F
Varmo de Fuzio
Neniu
Varmo de Vaporiĝo
Neniu
Specifa Varmo Kapacito
-
Krusta Abundo
Neniu
Universa Abundo
Neniu
CAS Nombro
7440-35-9
PubChem Kunmetita Identiga Nombro
Neniu
Atomaj Propraĵoj
Atoma Radiuso
173 pm
Kovalenta Radiuso
180 pm
Elektronegativeco
1,3 (Pauling-skalo)
Potencialo de jonigo
5,9738 eV
Atoma Volumo
17,78 cm3/mol
Termika Kondukto
0,1 W/cm·K
Oksidaj Ŝtatoj
2, 3, 4, 5, 6
Aplikoj
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
Izotopoj
Stabilaj Izotopoj
-Malstabilaj Isotopoj
229Am, 231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am