Amerisium

95
Am
Kumpulan
Tiada
Kala
7
Blok
f
Proton
Elektron
Neutron
95
95
148
Ciri-Ciri Am
Nombor atom
95
Berat atom
[243]
Nombor jisim
243
Kategori
Aktinid
Warna
Perak
Radioaktif
Ya
Named after America
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 32, 25, 8, 2
Konfigurasi elektron
[Rn] 5f7 7s2
Am
Americium often enters landfills from discarded smoke detectors
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
13.69 g/cm3
Takat lebur
1449.15 K | 1176 °C | 2148.8 °F
Takat didih
2880.15 K | 2607 °C | 4724.6 °F
Haba pelakuran
Tiada
Haba pengewapan
Tiada
Muatan haba molar
-
Banyak pada kerak bumi
Tiada
Banyak pada alam semesta
Tiada
A
Kredit imej: Wikimedia Commons (Bionerd)
A small disc of Am-241 under the microscope
Nombor CAS
7440-35-9
PubChem CID Number
Tiada
Ciri-Ciri Atom
Jejari atom
173 pm
Jejari kovalen
180 pm
Keelektronegatifan
1.3 (Skala Pauling)
Kebolehan mengion
5.9738 eV
Isipadu atom
17.78 cm3/mol
Daya pengaliran terma
0.1 W/cm·K
Keadaan pengoksidaan
2, 3, 4, 5, 6
Aplikasi
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
Isotop
Isotop stabil
-
Isotop tidak stabil
229Am, 231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am