Лутециум

71
Lu
Група
Нема одговор
Периода
6
блок
d
Protons
Electrons
Neutrons
71
71
104
Општи Својства
Атомски број
71
Атомска тежина
174,9668
Mass Number
175
Category
Ланта­ноид
Color
Silver
Radioactive
Не
Lutetia is the ancient name for Paris
Кристална структура
Simple Hexagonal
History
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.
Electrons per shell
2, 8, 18, 32, 9, 2
Електронска конфигурација
[Xe] 4f14 5d1 6s2
Lu
Lutetium was the last natural rare earth element to be discovered
Физички Својства
Фаза
Solid
Густина
9,84 g/cm3
Точка на топење
1925,15 K | 1652 °C | 3005,6 °F
Точка на вриење
3675,15 K | 3402 °C | 6155,6 °F
Топлина на топење
22 kJ/mol
Топлина на испарување
415 kJ/mol
Specific Heat Capacity
0,154 J/g·K
Abundance in Earth's crust
0,000056%
Abundance in Universe
1×10-8%
Ultrapure
Кредити на слика: Images-of-elements
Ultrapure piece of lutetium
CAS Number
7439-94-3
PubChem CID Number
23929
Атомски Својства
Атомски полупречник
174 pm
Ковалентен полупречник
187 pm
Електронегативност
1,27 (Полингова скала)
Ionization Potential
5,4259 eV
Atomic Volume
17,78 cm3/mol
Thermal Conductivity
0,164 W/cm·K
Oxidation States
3
Applications
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.
Lutetium is considered to be non toxic
Isotopes
Stable Isotopes
175Lu
Unstable Isotopes
150Lu, 151Lu, 152Lu, 153Lu, 154Lu, 155Lu, 156Lu, 157Lu, 158Lu, 159Lu, 160Lu, 161Lu, 162Lu, 163Lu, 164Lu, 165Lu, 166Lu, 167Lu, 168Lu, 169Lu, 170Lu, 171Lu, 172Lu, 173Lu, 174Lu, 176Lu, 177Lu, 178Lu, 179Lu, 180Lu, 181Lu, 182Lu, 183Lu, 184Lu