67 Ho 164.930332
Holmium
LANTHANIDE
Phase: Solid
Discovered: Marc Delafontaine
Block: F
Summary
Holmium is a chemical element with symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a rare earth element. Holmium was discovered by Swedish chemist Per Theodor Cleve.
Source: WikipediaPhysical Properties
Atomic Mass 164.930332 u
Density 8.79 g/cm³
Melting Point 1734 K
Boiling Point 2873 K