Ураниум

92
U
Група
Нема одговор
Периода
7
блок
f
Protons
Electrons
Neutrons
92
92
146
Општи Својства
Атомски број
92
Атомска тежина
238,02891
Mass Number
238
Category
Актиноид
Color
Silver
Radioactive
Да
Named after the planet Uranus
Кристална структура
Base Centered Orthorhombic
History
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.
Electrons per shell
2, 8, 18, 32, 21, 9, 2
Електронска конфигурација
[Rn] 5f3 6d1 7s2
U
Uranium-235 was the first isotope that was found to be fissile
Физички Својства
Фаза
Solid
Густина
18,95 g/cm3
Точка на топење
1405,35 K | 1132,2 °C | 2069,96 °F
Точка на вриење
4404,15 K | 4131 °C | 7467,8 °F
Топлина на топење
14 kJ/mol
Топлина на испарување
420 kJ/mol
Specific Heat Capacity
0,116 J/g·K
Abundance in Earth's crust
0,00018%
Abundance in Universe
2×10-8%
A
Кредити на слика: Wikimedia Commons (Zxctypo)
A billet of highly enriched uranium
CAS Number
7440-61-1
PubChem CID Number
23989
Атомски Својства
Атомски полупречник
156 pm
Ковалентен полупречник
196 pm
Електронегативност
1,38 (Полингова скала)
Ionization Potential
6,1941 eV
Atomic Volume
12,59 cm3/mol
Thermal Conductivity
0,276 W/cm·K
Oxidation States
3, 4, 5, 6
Applications
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 toxic and highly radioactive
Isotopes
Stable Isotopes
-
Unstable Isotopes
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