ウラン
92
U
族
該当なし
周期
7
ブロック
f
陽子
電子
中性子
92
92
146
一般特性
原子番号
92
原子量
238.02891
質量数
238
カテゴリ
アクチノイド
色
銀色
放射性
はい
Named after the planet Uranus
結晶構造
底心 斜方晶系
歴史
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.
電子殻
2, 8, 18, 32, 21, 9, 2
電子配置
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
物理特性
相
固体
密度
18.95 g/㎝3
融点
1405.35 K | 1132.2 °C | 2069.96 °F
沸点
4404.15 K | 4131 °C | 7467.8 °F
融解熱
14 kJ/mol
蒸発熱
420 kJ/mol
熱容量
0.116 J/g·K
地殻中における存在比
0.00018%
宇宙空間における存在比
2×10-8%
CAS登録番号
7440-61-1
PubChem CID番号
23989
原子特性
原子半径
156 pm
共有結合半径
196 pm
電気陰性度
1.38 (ポーリングの値)
イオン化エネルギー
6.1941 eV
モル体積
12.59 ㎝3/mol
熱伝導率
0.276 W/㎝·K
酸化数
3, 4, 5, 6
用途
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
同位体
安定同位体
-不安定同位体
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