Holmium is a chemical element and its atomic number is 67. Its atomic mass is 164.930 g/mol and it is represented by the symbol Ho. holmium is a part of the lanthanide series and it is in period 6 of the periodic table. It is an f-block element and the electronic configuration of Holmium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f11 5d0 6s2. In an electrically neutral atom, there are 67 electrons, 67 protons and 98 neutrons. The oxidation states are 0, +1, +2, +3 and its electronegativity is 1.23 (Pauling scale). Holmium has one stable isotope holmium-165. Holmium was discovered by Jacques-Louis Soret and Marc Delafontaine in 1878. It was isolated by Swedish chemist Per Teodor Cleve.
At STP holmium is solid and has a density of 8.79 g/cm3. Its melting point is 1734 K ?(1461 °C, ?2662 °F) and its boiling point is 2873 K ?(2600 °C, ?4712 °F). Holmium has a silvery-white colour.
Holmium like other rare earth elements does not found in free elemental form. It found in minerals like gadolinite and monazite. No holmium dominant mineral has found yet. Countries with high deposits of holmium minerals are China, United States, Brazil, India, Sri Lanka, and Australia.
Holmium has some of the following applications.
A radioactive isotope of Holmium is used in the calibration of gamma-ray spectrometers.
Holmium is used for the red and yellow colouring of glass and cubic zirconia.
Holmium is used as a calibration standard for the optical spectrophotometer.
Holmium-doped yttrium iron garnet has applications in optical isolators and in microwave equipment.
Holmium-doped yttrium lithium fluoride (YLF) have applications in solid-state lasers.
Holmium is used for generating artifically magnetic fields.
What is holmium used for?
Holmium has some of the following applications.
- A radioactive isotope of Holmium is used in the calibration of gamma-ray spectrometers.
- Holmium is used for the red and yellow colouring of glass and cubic zirconia.
- Holmium is used as a calibration standard for the optical spectrophotometer.
- Holmium-doped yttrium iron garnet has applications in optical isolators and in microwave equipment.
- Holmium-doped yttrium lithium fluoride (YLF) have applications in solid-state lasers.
- Holmium is used for generating artificial magnetic fields.
Who discovered holmium?
In 1878 Holmium was discovered by Jacques-Louis Soret and Marc Delafontaine which they name ''Element X'' at the time of its discovery. At the same time simultaneously Per Teodor Cleve independently discovered and isolated Holmium.
Where is holmium found?
Holmium is a rare earth element that is found attached with other elements. The main mining areas are in China, the USA, Brazil, India, Sri Lanka, and Australia. Holmium is found in minerals such as gadolinite and monazite.
How many protons does holmium have?
In an electrically neutral atom of Holmium, there are 67 protons.
