特性

CAS Number7440-73-5
PubChem CIDna
原子半径260
モル体積71.07
原子量[223]
ブロックs
沸点677
Bulk Modulus
カテゴリアルカリ金属
結晶構造
銀色
共有結合半径348
密度1.87
Electrical Resistivity
電子配置[Rn] 7s1
電子殻2, 8, 18, 32, 18, 8, 1
電気陰性度0.7
Electrons87
1
融解熱2
蒸発熱65
イオン化エネルギー4.073
Magnetic Ordering
Magnetic Susceptibility
質量[223]
Mass Number87
融点23
名称フランシウム
中性子136
原子番号223
酸化数1
周期7
固体
Poisson Ratio
陽子87
Shear Modulus
熱容量-
記号Fr
熱伝導率0.15
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比na
宇宙空間における存在比na
Fr フランシウム 87 (223) 1 7 s 87 27.0 677.0 [Rn] 7s1 2 8 18 32 18 8 1 N/A Silver Cubic: Body centered 0.7 {"1":"380"} 380 -44 1 2.7 2.1 64.0 15.0 1 21.7 m 31.7m BetaDecay Solid, AlkaliMetal, Metal, Radioactive, Natural FRAN-si-em Highly rare and unstable, radioactive metal. Since its isotopes have such short half-lives there are no commercially significant compounds of francium. Formed by decay of actinium. Chemical properties similar to cesium. Decays to radium or astatine. PyFLvSg6ZDw Francium
French chemist Georges Urbain successfully separated lutetium from ytterbia in 1907 in Paris.

Austrian scientist Carl Auer von Welsbach and American chemist Charles James also succeeded in isolating lutetium independently in the same year.

Pure lutetium metal was first produced in 1953. Lutetia is the ancient name for Paris 87 1939 Marguerite Perey France Named after "France"

ルテチウムの同位体

Standard Atomic Weight

[223]

安定同位体

不安定同位体

199Fr 200Fr 201Fr 202Fr 203Fr 204Fr 205Fr 206Fr 207Fr 208Fr 209Fr 210Fr 211Fr 212Fr 213Fr 214Fr 215Fr 216Fr 217Fr 218Fr 219Fr 220Fr 221Fr 222Fr 223Fr 224Fr 225Fr 226Fr 227Fr 228Fr 229Fr 230Fr 231Fr 232Fr

Lutetium is considered to be non toxic
Lutetium was the last natural rare earth element to be discovered
Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry.

Lutetium aluminum garnet has been proposed for use as a lens material in high refractive index immersion lithography.

Lutetium is used as a phosphor in LED light bulbs.