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Promethium

Pm Promethium
61
144.9127
9
Symbol
Pm
Atomic Number
61
Atomic Weight
144.9127
Discovered By
J.A. Marinsky, L.E. Glendenin, C.D. Coryell
Discovery Date
1945 (United States)
Name Origin
Named for the Greek god, Prometheus.
Density(g/cc)
7.2
Melting Point
1441
Boiling Point(K)
3000
Atomic Radius(pm)
n/a
Atomic Volume(cc/mol)
n/a
Covalent Radius(pm)
163
Ionic Radius
97.9 (+3e)
Specific Heat
0.185
Fusion Heat
n/a
Evaporation Heat(kj/mol)
n/a
Thermal Conductivity(@25°C W/m K)
17.9
Debye Temperature
n/a
Pauling Negativity Number
0.0
First Ionizing Energy(kj/mol)
536
Oxidation States
3
Electronic Configuration
[Xe] 4f5 6s2
Lattice Structure
(n/a)
Lattice Constant
n/a
Lattice C/A Ratio
n/a

KEY

SEE ALSO

Promethium

Columbia Encyclopedia

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