Erbium

Symbol

Er

Atomic number

68

Atomic mass	167.26		Thermal conductivity	0.143
Atomic radius	2.45		Covalent radius	1.57
Density	8.5		Atomic volume	18.4
Melting point	1802		Oxidation states	3
Boiling point	3136		Stable isotopes	6
Heat of vapor.	261		Electronegativity	1.24
Heat of fusion	19.9		First ionization	6.101
Specific heat	0.17		Electrical conduct.	...

Electron configuration

Erbium

As a member of the fourteen member lanthanide series, this element has few properties which distinguish it from the other members of the series. All of them along with lanthanum, yttrium, and scandium occur in very small quantities in nature. The usual source is the mineral monazite, or monazite sand, which is a mixture of phosphates containing also some thorium phosphate.

Erbium Nuclear Data