67

Ho

Holmium
164.93032 (2)
 Historical Information

Per Theodor Cleve of Sweden discovered holmium while working on erbia earth (erbium oxide). Holmium oxide (holmia) was present as an impurity in the erbia. The element is named after Cleve's native city. Pure holmia, the yellow oxide, was prepared by Homberg in 1911.
Basic Information Shells
  • Name:Holmium
  • Symbol: Ho
  • Atomic number: 67
  • Atomic weight:164.93032 (2)
  • Standard state: solid at 298 K
  • Group in periodic table:
  • Group name:Lanthanoid
  • Period in periodic table: 6
  • Block in periodic table: f-block
  • Classification: Metallic
 Holmium
Uses Trivia
  • alloys

It oxidises rapidly in moist air and at elevated temperatures. The metal has unusual magnetic properties. The metal is a rare earth metal found in monazite, gadolinite and other minerals.