白金
78
Pt
族
10
周期
6
ブロック
d
陽子
電子
中性子
78
78
117
一般特性
原子番号
78
原子量
195.084
質量数
195
カテゴリ
遷移元素
色
灰色
放射性
いいえ
From the Spanish word platina, meaning silver
結晶構造
面心立方格子
歴史
Platinum was first used by pre-Columbian South American natives to produce artifacts.
Antonio de Ulloa published his findings about platinum in 1748, but Sir Charles Wood also investigated the metal in 1741.
First reference to it as a new metal was made by William Brownrigg in 1750.
Antonio de Ulloa published his findings about platinum in 1748, but Sir Charles Wood also investigated the metal in 1741.
First reference to it as a new metal was made by William Brownrigg in 1750.
電子殻
2, 8, 18, 32, 17, 1
電子配置
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
物理特性
相
固体
密度
21.45 g/㎝3
融点
2041.45 K | 1768.3 °C | 3214.94 °F
沸点
4098.15 K | 3825 °C | 6917 °F
融解熱
20 kJ/mol
蒸発熱
490 kJ/mol
熱容量
0.133 J/g·K
地殻中における存在比
3.7×10-6%
宇宙空間における存在比
5×10-7%
CAS登録番号
7440-06-4
PubChem CID番号
23939
原子特性
原子半径
139 pm
共有結合半径
136 pm
電気陰性度
2.28 (ポーリングの値)
イオン化エネルギー
8.9587 eV
モル体積
9.10 ㎝3/mol
熱伝導率
0.716 W/㎝·K
酸化数
2, 4, 5, 6
用途
The most common use of platinum is as a catalyst in chemical reactions.
Platinum is used in jewelry, decoration and dental work.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum-based anodes are used in ships, pipelines, and steel piers.
Platinum is used in jewelry, decoration and dental work.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum-based anodes are used in ships, pipelines, and steel piers.
Platinum is considered to be non-toxic
同位体
安定同位体
192Pt, 194Pt, 195Pt, 196Pt, 198Pt不安定同位体
166Pt, 167Pt, 168Pt, 169Pt, 170Pt, 171Pt, 172Pt, 173Pt, 174Pt, 175Pt, 176Pt, 177Pt, 178Pt, 179Pt, 180Pt, 181Pt, 182Pt, 183Pt, 184Pt, 185Pt, 186Pt, 187Pt, 188Pt, 189Pt, 190Pt, 191Pt, 193Pt, 197Pt, 199Pt, 200Pt, 201Pt, 202Pt