Ytterbium

70
Yb
Gruppe
n/a
Periode
6
Blok
f
Protons
Electrons
Neutrons
70
70
103
General Properties
Atomnummer
70
Atommasse
173,054
Mass Number
173
Kategori
Lantanider
Farve
Silver
Radioactive
Nej
Ytterbium was named after Ytterby, a town in Sweden
Krystalstruktur
Fladecentreret Kubisk
History
Ytterbium was discovered by the Swiss chemist Jean Charles Galissard de Marignac in the year 1878.

In 1907, in Paris, George Urbain separated ytterbia into two constituents.

Ytterbium metal was first made in 1937 by Klemm and Bonner by heating ytterbium chloride and potassium together.

A relatively pure sample of the metal was obtained only in 1953.
Elektroner i hver skal
2, 8, 18, 32, 8, 2
Elektronkonfiguration
[Xe] 4f14 6s2
Yb
Ytterbium is recovered commercially from monazite sand
Physical Properties
Tilstandsform
Fast stof
Massefylde
6,965 g/cm3
Smeltepunkt
1097,15 K | 824 °C | 1515,2 °F
Kogepunkt
1469,15 K | 1196 °C | 2184,8 °F
Smeltevarme
7,7 kJ/mol
Fordampningsvarme
160 kJ/mol
Varmefylde
0,155 J/g·K
Abundance in Earth's crust
0,00028%
Abundance in Universe
2×10-7%
Ultrapure
Billede akkrediteringer: Images-of-elements
Ultrapure ytterbium
CAS Number
7440-64-4
PubChem CID Number
23992
Atomic Properties
Atomradius
176 pm
Kovalent radius
187 pm
Elektronegativitet
1,1 (Paulings skala)
Ionization Potential
6,2542 eV
Atomic Volume
24,79 cm3/mol
Varmeledningsevne
0,349 W/cm·K
Oxidationstrin
2, 3
Applications
Ytterbium fiber laser amplifiers are used in marking and engraving.

Ytterbium compounds are also used as catalysts in the organic chemical industry.

Ytterbium can be used as a dopant to help improve the grain refinement, strength, and other mechanical properties of stainless steel.
Ytterbium is considered to be moderately toxic
Isotoper
Stable Isotopes
168Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, 176Yb
Unstable Isotopes
148Yb, 149Yb, 150Yb, 151Yb, 152Yb, 153Yb, 154Yb, 155Yb, 156Yb, 157Yb, 158Yb, 159Yb, 160Yb, 161Yb, 162Yb, 163Yb, 164Yb, 165Yb, 166Yb, 167Yb, 169Yb, 175Yb, 177Yb, 178Yb, 179Yb, 180Yb, 181Yb