| Symbol |
Er |
|
| Atomic Number |
68 |
Relative Atomic Mass
12C = 12.0000 |
167.26 |
Atomic Radius
pm |
176 |
First Ionisation Energy
kJ mol-1 |
588.7 |
| Electronegativity |
1.24 |
Density
kg m-3 |
9066 [298 K] |
Molar Volume
cm3 |
18.44 |
Thermal Conductivity
W m-1 K-1 |
14.3 [300 K] |
Melting Point
K |
1802 |
Boiling Point
K |
3136 |
| Number of Isotopes |
25 |
Ground State Electron
Configuration |
[Xe]4f126s2 |
| Term Symbol |
3H6 |
| Discovery |
Discovered by C.G. Mosander (Stockholm, Sweden) in 1842 |
| Name Derived From |
Named after Ytterby, Sweden |
Name in Other
Languages |
 Croatian | Erbij |
 Danish | erbium |
 Dutch | erbium |
 Finnish | erbium |
 French | erbium |
 German | Erbium |
 Italian | erbio |
 Norwegian | erbium |
 Portuguese | érbio |
 Spanish | erbio |
 Swedish | erbium |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
