Holmium

Symbol

Ho

Atomic number

67

Atomic mass	164.930		Thermal conductivity	1.62
Atomic radius	2.47		Covalent radius	1.58
Density	8.80		Atomic volume	18.7
Melting point	1747		Oxidation states	3
Boiling point	2968		Stable isotopes	1
Heat of vapor.	241.0		Electronegativity	1.23
Heat of fusion	12.2		First ionization	6.018
Specific heat	...		Electrical conduct.	...

Electron configuration

Holmium

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.

Holmium Nuclear Data