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The Rare
Earth Elements are divided into the Lanthanide and Actinide
series. The elements in the Lanthanide series closely resemble
lanthanum, and one another, in their chemical and physical
properties. Their compounds are used as catalysts in the
production of petroleum and synthetic products.
Brief Facts about the
Discovery and History of the Element Holmium
Holmium was discovered by Marc Delafontaine and Jacques Louis
Soret in 1878. Per Teodor Cleve independently discovered the
element in 1878.
Occurrence of the element Holmium
Occurs in gadolinite, monazite and other rare-earth minerals Common Uses of Holmium
Nuclear reactors
The Properties of the Element Holmium
Name of Element : Holmium
Symbol of Element : Ho
Atomic Number: 67
Atomic Mass: 164.93031 amu
Melting Point: 1470.0 °C - 1743.15 °K
Boiling Point: 2720.0 °C - 2993.15 °K
Number of Protons/Electrons: 67
Number of Neutrons: 98
Crystal Structure: Hexagonal
Density @ 293 K: 8.54 g/cm3
Color: Silver |