Pr
140.910Praseodymium
Praseodim
Praseodymium is a lanthanide with atomic number 59. It is used in rare earth magnets, yellow-green glass and ceramic pigments, didymium glass, specialty alloys and optical materials.
59
140.91 g/mol
[Xe] 4f³ 6s²
2 | 8 | 18 | 21 | 8 | 2
1.13
6.77 g/cm³
934.9 °C
3129.8 °C
Carl Auer von Welsbach
Praseodymium was separated in 1885 by Carl Auer von Welsbach from didymium, which was once thought to be a single element. Its name comes from Greek words meaning green twin, referring to its green salts and its relationship with neodymium.
Praseodymium-141
Natural abundance: 100%. The only stable natural praseodymium isotope.Pr₆O₁₁
Praseodymium OxideYellow-orange ceramic pigment and glass colorant.PrCl₃
Praseodymium(III) ChlorideResearch precursor for praseodymium compounds and alloys.PrFeB
Praseodymium-Iron-Boron AlloyRare earth permanent magnet material related to Nd-Fe-B magnets.- Praseodymium additions to Nd-Fe-B rare earth magnets to improve performance and corrosion behavior
- Praseodymium oxide yellow-orange pigments for ceramics and glass
- Didymium glass with neodymium for filtering intense yellow sodium light
- High-strength magnesium alloys for aircraft-engine applications
- Specialty optical and magneto-optic materials
Praseodymium has no known essential biological role.
- Praseodymium and neodymium were both separated from didymium, the old “twin” rare earth mixture.
- Praseodymium salts often show green colors, matching the origin of the element’s name.
- Praseodymium yellow pigments are valued as lower-toxicity alternatives to some older heavy-metal pigments.
- Natural praseodymium is monoisotopic, consisting of praseodymium-141.
- Praseodymium has atomic number 59 and is a lanthanide.
- Its electron configuration is [Xe] 4f³ 6s².
- The most common oxidation state is +3.
- Remember Pr for rare earth magnets, pigments and didymium glass.
What is the atomic number of praseodymium?
The atomic number of praseodymium is 59.
What is the electron configuration of praseodymium?
Praseodymium has the electron configuration [Xe] 4f³ 6s².
What is praseodymium used for?
Praseodymium is used in rare earth magnets, ceramic pigments, colored glass, didymium glass and specialty alloys.
Is praseodymium a rare earth element?
Yes. Praseodymium is a lanthanide rare earth element.
What is didymium glass?
Didymium glass contains praseodymium and neodymium and is used to filter bright yellow sodium light, especially in glassworking eyewear.
Does praseodymium have stable isotopes?
Yes. Natural praseodymium is essentially all stable praseodymium-141.