Praseodymium
(Redirected from Pr)
| Praseodymium | |
|---|---|
| Pr | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 59 |
| Atomic mass: | 140.90765 |
| group: | 19 |
| period: | N/A |
| normal phase: | Solid |
| series: | Lanthanide |
| density: | 6.77 g/cm3 |
| melting point: | 1208K, 935°C, 1715°F |
| boiling point: | 3793K, 3520°C, 6368°F |
| Sr ← Y → Zr | |
| Ce ← Pr → Nd | |
| Th ← Pa → U | |
| Atomic radius (pm): | 185 |
| Bohr radius (pm): | 247 |
| Covalent radius (pm): | |
| Van der Waals radius (pm): | |
| ionic radius (pm): | (+3) 113 |
| 1st ion potential (eV): | 5.46 |
| Electron Configuration | |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f3 5s2 5p6 6s2 | |
| Electrons Per Shell | |
| 2, 8, 18, 21, 8, 2 | |
| Electronegativity: | 1.13 |
| Electron Affinity: | - |
| Oxidation states: | 3, 4 |
| Magnetism: | ? |
| Crystal structure: | Hexagonal |
Praseodymium is a Lanthanide metal.
It has a Hexagonal crystalline structure.
This element has a stable isotope of 141
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