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Name Holmium
Symbol Ho
Atomic number 67
Atomic mass 164.93032 amu
Normal state Solid
Classification Metallic
Crystal structure Hexagonal
Color silvery white
Date of discovery 1878
Name of discoverer Marc Delafontaine and Jacques-Louis Soret
Name origin From Holmia, the Greek name for Sweden.
Uses Control-rods for nuclear reactors, as it readily absorbs neutrons. Also used as a flux concentrator for high magnetic fields.
Obtained from Found chiefly in monazite and bastnasite ores