Holmium (Ho), element 67 – Learn Acer periodic table

Holmium

Lanthanide, atomic number 67.

Holmium is a chemical element with symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a rare earth element. Holmium was discovered by Swedish chemist Per Theodor Cleve.

Facts

Symbol Ho. Atomic mass 164.930332 u. Group 3, period 6. Electron configuration [Xe] 4f11 6s2. Electrons per shell 2, 8, 18, 29, 8, 2. State at room temperature: Solid. Melting point 1460.8 °C, boiling point 2599.8 °C. Discovered by Marc Delafontaine.

Element data from Wikipedia, CC BY-SA 3.0.