ビスマス

83
Bi
15
周期
6
ブロック
p
陽子
電子
中性子
83
83
126
一般特性
原子番号
83
原子量
208.9804
質量数
209
カテゴリ
卑金属
灰色
放射性
いいえ
From the German Weisse Masse, meaning white mass
結晶構造
底心 単斜晶
歴史
Bismuth has been known since ancient times, so no one person is credited with its discovery.

The element was confused in early times with tin and lead because of its resemblance to those elements.

In 1753, French chemist Claude François Geoffroy demonstrated that this metal is distinct from lead and tin.
電子殻
2, 8, 18, 32, 18, 5
電子配置
[Xe] 4f14 5d10 6s2 6p3
Bi
Bismuth has unusually high electrical resistance for a metal
物理特性
固体
密度
9.78 g/㎝3
融点
544.65 K | 271.5 °C | 520.7 °F
沸点
1837.15 K | 1564 °C | 2847.2 °F
融解熱
10.9 kJ/mol
蒸発熱
160 kJ/mol
熱容量
0.122 J/g·K
地殻中における存在比
2.5×10-6%
宇宙空間における存在比
7×10-8%
Bismuth
画像の出典: Images-of-elements
Bismuth crystal with fancy oxide film
CAS登録番号
7440-69-9
PubChem CID Number
5359367
原子特性
原子半径
156 pm
共有結合半径
148 pm
電気陰性度
2.02 (ポーリングの値)
イオン化エネルギー
7.2856 eV
モル体積
21.3 ㎝3/mol
熱伝導率
0.0797 W/㎝·K
酸化数
-3, 3, 5
用途
Bismuth is used in producing malleable irons and is used as a catalyst for making acrylic fibers.

Bismuth oxychloride is used in cosmetics, as a pigment in paint for eye shadows, hair sprays and nail polishes.

It has also been used as a replacement for lead in shot, bullets and less-lethal riot gun ammunition.
Bismuth is considered to be non-toxic
同位体
安定同位体
-
不安定同位体
184Bi, 185Bi, 186Bi, 187Bi, 188Bi, 189Bi, 190Bi, 191Bi, 192Bi, 193Bi, 194Bi, 195Bi, 196Bi, 197Bi, 198Bi, 199Bi, 200Bi, 201Bi, 202Bi, 203Bi, 204Bi, 205Bi, 206Bi, 207Bi, 208Bi, 209Bi, 210Bi, 211Bi, 212Bi, 213Bi, 214Bi, 215Bi, 216Bi, 217Bi, 218Bi