Holmium

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Holmium
Properties
Atomic symbol Ho
Atomic number 67
Classification Metallic
Atomic mass 164.93032 amu
Other Information
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