Erbium
68
Er
Groep
n.v.t.
Periode
6
Blok
f
Protonen
Elektronen
Neutronen
68
68
99
Algemene Eigenschappen
Atoomnummer
68
Atomair gewicht
167,259
Massa Getal
167
Categorie
Lanthaniden
Kleur
Zilver
Radioactief
Nee
Erbium was named after Ytterby, a town in Sweden
Kristalstructuur
Eenvoudige Hexagonaal
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.
Eletronen per schil
2, 8, 18, 30, 8, 2
Electronconfiguratie
[Xe] 4f12 6s2
The highest concentration of erbium in humans is in the bones
Fysieke Eigenschappen
Fase
Vast
Dichtheid
9,066 g/cm3
Smeltpunt
1802,15 K | 1529 °C | 2784,2 °F
Kookpunt
3141,15 K | 2868 °C | 5194,4 °F
Fusiewarmte
19,9 kJ/mol
Verdampingswarmte
285 kJ/mol
Specifieke Warmtecapaciteit
0,168 J/g·K
Overvloedig aanwezig in de aardkorst
0,0003%
Overvloedig aanwezig in het universum
2×10-7%
CAS-nummer
7440-52-0
PubChem CID nummer
23980
Atoomeigenschappen
Atoomstraal
176 pm
Covalentiestraal
189 pm
Electronegativiteit
1,24 (Pauling schaal)
Ionisatiepotentiaal
6,1077 eV
Atoomvolume
18,4 cm3/mol
Thermische geleiding
0,143 W/cm·K
Oxidatietoestanden
3
Toepassingen
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
Isotopen
Stabiele isotopen
162Er, 164Er, 166Er, 167Er, 168Er, 170ErInstabiele isotopen
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