Praseodymium

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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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