Erbium
68
Er
Gruppe
i/t
Periode
6
Blokk
f
Proton
Elektron
Nøytron
68
68
99
Generelle eigenskapar
Atomnummer
68
Atommasse
167,259
Massetal
167
Kategori
Lantanid
Farge
Sølv
Radioaktiv
Nei
Erbium was named after Ytterby, a town in Sweden
Krystallstruktur
Enkel heksagonal
Historie
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.
Elektron per energinivå
2, 8, 18, 30, 8, 2
Elektronkonfigurasjon
[Xe] 4f12 6s2
The highest concentration of erbium in humans is in the bones
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
9,066 g/cm3
Smeltepunkt
1802,15 K | 1529 °C | 2784,2 °F
Kokepunkt
3141,15 K | 2868 °C | 5194,4 °F
Smeltevarme
19,9 kJ/mol
Fordampingsvarme
285 kJ/mol
Spesifikk varmekapasitet
0,168 J/g·K
Førekomst i jordskorpa
0,0003%
Førekomst i universet
2×10-7%
CAS-nummer
7440-52-0
PubChem CID-nummer
23980
Atom eigenskapar
Atomradius
176 pm
Kovalent radius
189 pm
Elektronegativitet
1,24 (Paulings skala)
Ioniseringspotensial
6,1077 eV
Molart volum
18,4 cm3/mol
Termisk konduktivitet
0,143 W/cm·K
Oksidasjonstrinn
3
Bruksområde
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
Isotopar
Stabile isotopar
162Er, 164Er, 166Er, 167Er, 168Er, 170ErUstabile isotopar
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