Uranium
92
U
Golongan
n/a
Periode
7
Blok
f
Proton
Elektron
Neutron
92
92
146
Sifat Umum
Nomor atom
92
Massa atom
238,02891
Nomor massa
238
Kategori
Aktinida
Warna
Perak
Radioaktif
Ya
Named after the planet Uranus
Struktur kristal
Ortorombik Berpusat-dasar
Sejarah
Uranium was discovered in 1789 by the German chemist Martin Heinrich Klaproth.
In 1841, Eugène-Melchior Péligot isolated the first sample of uranium metal by heating uranium tetrachloride with potassium.
Antoine Henri Becquerel discovered radioactivity by using uranium in 1896.
In 1841, Eugène-Melchior Péligot isolated the first sample of uranium metal by heating uranium tetrachloride with potassium.
Antoine Henri Becquerel discovered radioactivity by using uranium in 1896.
Elektron per kulit
2, 8, 18, 32, 21, 9, 2
Konfigurasi elektron
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
Sifat Fisika
Fase
Solid
Kepadatan
18,95 g/cm3
Titik lebur
1405,35 K | 1132,2 °C | 2069,96 °F
Titik didih
4404,15 K | 4131 °C | 7467,8 °F
Kalor peleburan
14 kJ/mol
Kalor penguapan
420 kJ/mol
Kapasitas kalor molar
0,116 J/g·K
Kelimpahan di kerak bumi
0,00018%
Kelimpahan di alam semesta
2×10-8%
Nomor CAS
7440-61-1
Nomor PubChem CID
23989
Sifat Atom
Jari-jari atom
156 pm
Jari-jari kovalen
196 pm
Elektronegativitas
1,38 (Skala Pauling)
Potensi Ionisasi
6,1941 eV
Volume atom
12,59 cm3/mol
Kondusivitas termal
0,276 W/cm·K
Bilangan oksidasi
3, 4, 5, 6
Aplikasi
Uranium is used as fuel for nuclear power plants.
Uranium is used as a colorant in uranium glass, producing orange-red to lemon yellow hues.
It was also used for tinting and shading in early photography.
The major application of uranium in the military sector is in high-density penetrators.
Uranium is used as a colorant in uranium glass, producing orange-red to lemon yellow hues.
It was also used for tinting and shading in early photography.
The major application of uranium in the military sector is in high-density penetrators.
Uranium is toxic and highly radioactive
Isotop
Isotop stabil
-Isotop tidak stabil
215U, 216U, 217U, 218U, 219U, 220U, 221U, 222U, 223U, 224U, 225U, 226U, 227U, 228U, 229U, 230U, 231U, 232U, 233U, 234U, 235U, 236U, 237U, 238U, 239U, 240U, 241U, 242U