Praseodymium
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| General Properties | ||||||||
|---|---|---|---|---|---|---|---|---|
| Atomic number | Atomic mass | Atomic radii | Electron Configuration | Density | Melting point | Boiling point | First discovered | Most common compound on Earth |
| 59 | 140.908amu | 247pm | [Xe] 4f3 6s2 | 6.77g/cm3 | 931°C | 3520°C | 1885 | (Ce,La,Nd,Th)(PO4,SiO4) (Monazite Ore) |
| General Properties | |
|---|---|
| Atomic number | 59 |
| Atomic mass | 140.908amu |
| Atomic radii | 247pm |
| Electron Configuration | [Xe] 4f3 6s2 |
| Density | 6.77g/cm3 |
| Melting point | 931°C |
| Boiling point | 3520°C |
| First discovered | 1885 |
| Most common compound on Earth | (Ce,La,Nd,Th)(PO4,SiO4) (Monazite Ore) |
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Description and uses
Praseodymium (pronounced “Pray-zee-uh-di-mee-um”) is the 59th element of the periodic table, and the one whose name takes up the most space when written down - even more than the element with the most letters, rutherfordium. It was discovered in 1885 when Carl Auer von Welsbach split the compound didymium (a mixture of neodymium
and praseodymium) into its two parts.
Praseodymium has just one naturally occurring isotope, being 141Pr, making it one of the monoisotopic elements.