Date of Discovery: 1878
Discoverer: J.L. Soret
Name Origin: Form the Latin word Holmia (Stockholm)
Uses: Nuclear reactors
Obtained From: Gadolinite

 
Atomic Number: 67
Atomic Mass: 164.93031 amu
Melting Point: 1470.0 °C (1743.15 °K, 2678.0 °F)
Boiling Point: 2720.0 °C (2993.15 °K, 4928.0 °F)
Crystal Structure: Hexagonal
Density @ 293 K: 8.54 g/cm3
Color: Silver

 
Isotope
Ho-163
Ho-165
Ho-166
Ho-166m
Half Life
4570.0 years
Stable
1.1 days
1200.0 years