NO. 067Lanthanide

Ho

Holmium

Holmium has the highest magnetic strength of any element and is used in magnetic applications.

Crystal Structure

Hexagonal close-packed (hcp)

Atomic Mass164.93 u

Density8.8 g/cm³

Melting Point1734 K

Boiling Point2873 K

Atomic Radius174 pm

Electronegativity1.23

Ionization Energy581 kJ/mol

Electron Affinity50 kJ/mol

Bonding TypeMetallic

Oxidation States3

Acid/BaseBasic

ReactivityHigh

Electron Configuration

[Xe] 4f11 6s2

Discovered ByMarc Delafontaine

Year1878

Known Isotopes

Ho-165