臭素
35
Br
族
17
周期
4
ブロック
p
陽子
電子
中性子
35
35
45
一般特性
原子番号
35
原子量
79.904
質量数
80
カテゴリ
ハロゲン
色
赤色
放射性
いいえ
From the Greek word bromos, stench
結晶構造
底心 斜方晶系
歴史
Carl Jacob Löwig discovered bromine in 1825, while still a chemistry student at Heidelberg University, Germany.
Antoine Balard distilled the bromine from a solution of seaweed ash saturated with chlorine in 1824.
He finally published his results in 1826, providing evidence that the substance he had discovered was a new element.
Antoine Balard distilled the bromine from a solution of seaweed ash saturated with chlorine in 1824.
He finally published his results in 1826, providing evidence that the substance he had discovered was a new element.
電子殻
2, 8, 18, 7
電子配置
[Ar] 3d10 4s2 4p5
Bromine is the only nonmetallic element that is liquid at ordinary temperatures
物理特性
相
液体
密度
3.122 g/㎝3
融点
265.95 K | -7.2 °C | 19.04 °F
沸点
331.95 K | 58.8 °C | 137.84 °F
融解熱
5.8 kJ/mol
蒸発熱
14.8 kJ/mol
熱容量
0.474 J/g·K
地殻中における存在比
0.0003%
宇宙空間における存在比
7×10-7%
CAS登録番号
7726-95-6
PubChem CID番号
24408
原子特性
原子半径
120 pm
共有結合半径
120 pm
電気陰性度
2.96 (ポーリングの値)
イオン化エネルギー
11.8138 eV
モル体積
23.5 ㎝3/mol
熱伝導率
0.00122 W/㎝·K
酸化数
-1, 1, 3, 4, 5, 7
用途
Bromine is used in making fumigants, flameproofing agents, water purification compounds, dyes, medicines and sanitizers.
Potassium bromide is used as a source of bromide ions for the manufacture of silver bromide for photographic film.
Bromine is also used to reduce mercury pollution from coal-fired power plants.
Potassium bromide is used as a source of bromide ions for the manufacture of silver bromide for photographic film.
Bromine is also used to reduce mercury pollution from coal-fired power plants.
Bromine is poisonous and causes skin burns
同位体
安定同位体
79Br, 81Br不安定同位体
67Br, 68Br, 69Br, 70Br, 71Br, 72Br, 73Br, 74Br, 75Br, 76Br, 77Br, 78Br, 80Br, 82Br, 83Br, 84Br, 85Br, 86Br, 87Br, 88Br, 89Br, 90Br, 91Br, 92Br, 93Br, 94Br, 95Br, 96Br, 97Br