Amerikium
95
Am
Groep
n/a
Periode
7
Blok
f
Protrone
Elektrone
Neutrone
95
95
148
Algemene Eienskappe
Atoom Nommer
95
Atoommassa
[243]
Massa Nommer
243
Kategorie
Aktiniede
Kleur
Silver
Radioaktief
Ja
Named after America
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
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.
Elektrone per skil
2, 8, 18, 32, 25, 8, 2
Elektronkonfigurasie
[Rn] 5f7 7s2
Americium often enters landfills from discarded smoke detectors
Fisiese Eienskappe
Fase
Soliede
Digtheid
13,69 g/cm3
Smeltpunt
1449,15 K | 1176 °C | 2148,8 °F
Kookpunt
2880,15 K | 2607 °C | 4724,6 °F
Heat of Fusion
n/a
Heat of Vaporization
n/a
Spesifieke Hitte Kapasiteit
-
Oorvloed in die aardkors
n/a
Oorvloed in die heelal
n/a
CAS Nommer
7440-35-9
PubChem CID Nommer
n/a
Atomiese Eienskappe
Atoom radius
173 pm
Kovalente Radius
180 pm
Elektronegatiewiteit
1,3 (Pauling scale)
Ionisasie potensiaal
5,9738 eV
Atoom volume
17,78 cm3/mol
Termiese geleidingsvermoë
0,1 W/cm·K
Oksidasiestate
2, 3, 4, 5, 6
Toepassings
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
Isotope
Stabiele Isotope
-Onstabiele Isotope
229Am, 231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am