ジスプロシウム
66
Dy
族
該当なし
周期
6
ブロック
f
陽子
電子
中性子
66
66
97
一般特性
原子番号
66
原子量
162.5
質量数
163
カテゴリ
ランタノイド
色
銀色
放射性
いいえ
From the Greek word dysprositos, meaning hard to get at
結晶構造
六方最密構造
歴史
French chemist Paul Émile Lecoq de Boisbaudran, while working with holmium oxide, separated dysprosium oxide from it in Paris in 1886.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
電子殻
2, 8, 18, 28, 8, 2
電子配置
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
物理特性
相
固体
密度
8.55 g/㎝3
融点
1680.15 K | 1407 °C | 2564.6 °F
沸点
2840.15 K | 2567 °C | 4652.6 °F
融解熱
11.1 kJ/mol
蒸発熱
280 kJ/mol
熱容量
0.17 J/g·K
地殻中における存在比
0.00062%
宇宙空間における存在比
2×10-7%
CAS登録番号
7429-91-6
PubChem CID番号
23912
原子特性
原子半径
178 pm
共有結合半径
192 pm
電気陰性度
1.22 (ポーリングの値)
イオン化エネルギー
5.9389 eV
モル体積
19.0 ㎝3/mol
熱伝導率
0.107 W/㎝·K
酸化数
2, 3
用途
Dysprosium oxide-nickel cermets are used in neutron-absorbing control rods in nuclear reactors.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is considered to be moderately toxic
同位体
安定同位体
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164Dy不安定同位体
138Dy, 139Dy, 140Dy, 141Dy, 142Dy, 143Dy, 144Dy, 145Dy, 146Dy, 147Dy, 148Dy, 149Dy, 150Dy, 151Dy, 152Dy, 153Dy, 154Dy, 155Dy, 157Dy, 159Dy, 165Dy, 166Dy, 167Dy, 168Dy, 169Dy, 170Dy, 171Dy, 172Dy, 173Dy