Свойства

CAS Number7440-73-5
PubChem CIDna
Атомен радиус260
Моларен обем71,07
Атомна маса[223]
Блокs
Температура на кипене677
Bulk Modulus
КатегорияАлкални метали
Кристална структура
ЦвятСребърен
Ковалентен радиус348
Плътност1,87
Electrical Resistivity
Електронна конфигурация[Rn] 7s1
Електрон на обвивка2, 8, 18, 32, 18, 8, 1
Електроотрицателност0,7
Electrons87
Група1
Топлина на сливането2
Топлина на изпаряване65
Йонизационен потенциал4,073
Magnetic Ordering
Magnetic Susceptibility
Маса[223]
Mass Number87
Температура на топене23
ИмеФранций
Неутрони136
Атомен номер223
Оксидационни държави1
Период7
ФазаТвърди
Poisson Ratio
Протони87
Shear Modulus
Специфичен топлинен капацитет-
СимволFr
Топлопроводимост0,15
Van der Waals radius
Young's Modulus
Изобилие
Изобилие в земната кораna
Изобилие в вселенатаna
Fr Франций 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"

Isotopes of Lutetium

Standard Atomic Weight

[223]

Стабилни изотопи

Нестабилни изотопи

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.