Promethium

From Lunarpedia
(Redirected from Pm)
Jump to: navigation, search
Promethium
Pm
In situ availability:
Necessity:
Atomic number: 61
Atomic mass: [145]
group: 19
period: N/A
normal phase: Solid
series: Lanthanide
density: 7.26 g/cm3
melting point: 1315K,
1042°C,
1908°F
boiling point: 3273K,
3000°C,
5432°F
SrYZr
Nd ← Pm → Sm
UNpPu
Atomic radius (pm): 185
Bohr radius (pm): 205
Covalent radius (pm):
Van der Waals radius (pm):
ionic radius (pm): (+3)109
1st ion potential (eV): 5.55
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d10
4s2 4p6 4d10 4f5
5s2 5p6
6s2
Electrons Per Shell
2, 8, 18, 23, 8, 2
Electronegativity:
Electron Affinity: -
Oxidation states: 3
Magnetism: ?
Crystal structure: Hexagonal

Promethium is a Lanthanide metal. It has a Hexagonal crystalline structure. It does not have any isotopes considered to be natural. Its longest-lived known isotope has an atomic number of 145. This element has no stable isotopes.




This article is an automatically generated stub. As such it may contain serious errors.
You can help Lunarpedia by expanding or correcting it.