スカンジウム
21
Sc
族
3
周期
4
ブロック
d
陽子
電子
中性子
21
21
24
一般特性
原子番号
21
原子量
44.955912
質量数
45
カテゴリ
遷移元素
色
銀色
放射性
いいえ
From the Latin word Scandia, Scandinavia
結晶構造
六方最密構造
歴史
In 1879, Lars Fredrik Nilson and his team detected scandium in the minerals euxenite and gadolinite.
Nilson prepared 2 grams of scandium oxide of high purity.
Per Teodor Cleve showed that scandium had properties similar to those predicted by Mendeleev for eka-boron.
Metallic scandium was first prepared in 1937 by Fischer and his colleagues.
Nilson prepared 2 grams of scandium oxide of high purity.
Per Teodor Cleve showed that scandium had properties similar to those predicted by Mendeleev for eka-boron.
Metallic scandium was first prepared in 1937 by Fischer and his colleagues.
電子殻
2, 8, 9, 2
電子配置
[Ar] 3d1 4s2
The stable form of scandium is created in supernovas via the r-process
物理特性
相
固体
密度
2.989 g/㎝3
融点
1814.15 K | 1541 °C | 2805.8 °F
沸点
3109.15 K | 2836 °C | 5136.8 °F
融解熱
16 kJ/mol
蒸発熱
318 kJ/mol
熱容量
0.568 J/g·K
地殻中における存在比
0.0026%
宇宙空間における存在比
3×10-6%
CAS登録番号
7440-20-2
PubChem CID番号
23952
原子特性
原子半径
162 pm
共有結合半径
170 pm
電気陰性度
1.36 (ポーリングの値)
イオン化エネルギー
6.5615 eV
モル体積
15.0 ㎝3/mol
熱伝導率
0.158 W/㎝·K
酸化数
1, 2, 3
用途
Scandium is used in sports equipment such as golf iron shafts, baseball bats, bicycle frames and fishing rods.
Scandium iodide, along with sodium iodide, when added to a modified form of mercury-vapor lamp, produces a form of metal halide lamp.
The radioactive isotope 46Sc is used in oil refineries as a tracing agent.
Scandium iodide, along with sodium iodide, when added to a modified form of mercury-vapor lamp, produces a form of metal halide lamp.
The radioactive isotope 46Sc is used in oil refineries as a tracing agent.
Scandium is considered to be of low toxicity
同位体
安定同位体
45Sc不安定同位体
36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc