エルビウム
68
Er
族
該当なし
周期
6
ブロック
f
陽子
電子
中性子
68
68
99
一般特性
原子番号
68
原子量
167.259
質量数
167
カテゴリ
ランタノイド
色
銀色
放射性
いいえ
Erbium was named after Ytterby, a town in Sweden
結晶構造
六方最密構造
歴史
Erbium was discovered in 1843 by Swedish chemist Carl Gustaf Mosander, who detected it as an impurity in yttria.
Using ammonium hydroxide he precipitated fractions of different basicity from yttria.
In these fractions he found that the fraction that contained the pink color was erbium.
Using ammonium hydroxide he precipitated fractions of different basicity from yttria.
In these fractions he found that the fraction that contained the pink color was erbium.
電子殻
2, 8, 18, 30, 8, 2
電子配置
[Xe] 4f12 6s2
The highest concentration of erbium in humans is in the bones
物理特性
相
固体
密度
9.066 g/㎝3
融点
1802.15 K | 1529 °C | 2784.2 °F
沸点
3141.15 K | 2868 °C | 5194.4 °F
融解熱
19.9 kJ/mol
蒸発熱
285 kJ/mol
熱容量
0.168 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
2×10-7%
CAS登録番号
7440-52-0
PubChem CID番号
23980
原子特性
原子半径
176 pm
共有結合半径
189 pm
電気陰性度
1.24 (ポーリングの値)
イオン化エネルギー
6.1077 eV
モル体積
18.4 ㎝3/mol
熱伝導率
0.143 W/㎝·K
酸化数
3
用途
Erbium is used in photographic filters to absorb infrared light.
Erbium oxide gives a pink color and has been used as a colorant in glasses and porcelain enamel glazes.
It is also used in nuclear technology in neutron-absorbing control rods.
Erbium is used in alloys especially with vanadium to decrease the hardness of metals.
Erbium oxide gives a pink color and has been used as a colorant in glasses and porcelain enamel glazes.
It is also used in nuclear technology in neutron-absorbing control rods.
Erbium is used in alloys especially with vanadium to decrease the hardness of metals.
Erbium is considered to be moderately toxic
同位体
安定同位体
162Er, 164Er, 166Er, 167Er, 168Er, 170Er不安定同位体
143Er, 144Er, 145Er, 146Er, 147Er, 148Er, 149Er, 150Er, 151Er, 152Er, 153Er, 154Er, 155Er, 156Er, 157Er, 158Er, 159Er, 160Er, 161Er, 163Er, 165Er, 169Er, 171Er, 172Er, 173Er, 174Er, 175Er, 176Er, 177Er