ラドン
86
Rn
族
18
周期
6
ブロック
p
陽子
電子
中性子
86
86
136
一般特性
原子番号
86
原子量
[222]
質量数
222
カテゴリ
希ガス
色
無色
放射性
はい
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
結晶構造
該当なし
歴史
Radon was discovered in 1900 by Friedrich Ernst Dorn in Halle, Germany.
He reported some experiments in which he noticed that radium compounds emanate a radioactive gas.
In 1910, Sir William Ramsay and Robert Whytlaw-Gray isolated radon, determined its density, and determined that it was the heaviest known gas.
He reported some experiments in which he noticed that radium compounds emanate a radioactive gas.
In 1910, Sir William Ramsay and Robert Whytlaw-Gray isolated radon, determined its density, and determined that it was the heaviest known gas.
電子殻
2, 8, 18, 32, 18, 8
電子配置
[Xe] 4f14 5d10 6s2 6p6
Upon condensation, radon glows because of the intense radiation it produces
物理特性
相
気体
密度
0.00973 g/㎝3
融点
202 K | -71.15 °C | -96.07 °F
沸点
211.3 K | -61.85 °C | -79.33 °F
融解熱
3 kJ/mol
蒸発熱
17 kJ/mol
熱容量
0.094 J/g·K
地殻中における存在比
該当なし
宇宙空間における存在比
該当なし
CAS登録番号
10043-92-2
PubChem CID番号
24857
原子特性
原子半径
120 pm
共有結合半径
150 pm
電気陰性度
-
イオン化エネルギー
10.7485 eV
モル体積
50.5 ㎝3/mol
熱伝導率
0.0000364 W/㎝·K
酸化数
2, 4, 6
用途
Radon is used in hydrologic research that studies the interaction between ground water and streams.
Radon has been produced commercially for use in radiation therapy.
Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers.
Radon has been produced commercially for use in radiation therapy.
Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers.
Radon is highly radioactive and a carcinogen
同位体
安定同位体
-不安定同位体
195Rn, 196Rn, 197Rn, 198Rn, 199Rn, 200Rn, 201Rn, 202Rn, 203Rn, 204Rn, 205Rn, 206Rn, 207Rn, 208Rn, 209Rn, 210Rn, 211Rn, 212Rn, 213Rn, 214Rn, 215Rn, 216Rn, 217Rn, 218Rn, 219Rn, 220Rn, 221Rn, 222Rn, 223Rn, 224Rn, 225Rn, 226Rn, 227Rn, 228Rn