Erbium
68
Er
Ryhmä
Ei saatavilla
Jakso
6
Lohko
f
Protonia
Elektronit
Neutronia
68
68
99
Yleiset ominaisuudet
Järjestysluku
68
Atomipaino
167,259
Massaluku
167
Luokka
Lantanoidit
Väri
Hopea
Radioaktiivisuus
Ei
Erbium was named after Ytterby, a town in Sweden
Kiderakenne
Yksinkertainen kuusikulmainen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 18, 30, 8, 2
Orbitaalirakenne
[Xe] 4f12 6s2
The highest concentration of erbium in humans is in the bones
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
9,066 g/cm3
Sulamispiste
1802,15 K | 1529 °C | 2784,2 °F
Kiehumispiste
3141,15 K | 2868 °C | 5194,4 °F
Sulamislämpö
19,9 kJ/mol
Höyrystymislämpö
285 kJ/mol
Ominaislämpökapasiteetti
0,168 J/g·K
Esiintyvyys maankuoressa
0,0003%
Esiintyvyys maailmankaikkeudessa
2×10-7%
CAS-numero
7440-52-0
PubChem CID-numero
23980
Atomiominaisuudet
Atomisäde
176 pm
Kovalenttisäde
189 pm
Elektronegatiivisuus
1,24 (Paulingin asteikko)
Ionisoitumispotentiaali
6,1077 eV
Moolitilavuus
18,4 cm3/mol
Lämmönjohtavuus
0,143 W/cm·K
Hapetusluvut
3
Käyttö
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
Isotooppi
Vakaat isotoopit
162Er, 164Er, 166Er, 167Er, 168Er, 170ErEpävakaat isotoopit
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