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Periodic Table
Picture of  Promethium

 Atomic No. Order:e

 Alphabetic Order:

Ground State Electron Configuration of  Promethium
Symbol: Pm
Atomic Number: 61
Atomicmass: (147) g.mol -1
Electronegative (According to Pauling): unknown
Density: 6.475 g.cm-3 at 20°C
Melting Point: 1168 °C
Boiling Point: 2460 °C
Venderwaals Radious: unknown
Ionic Radious: unknown
Isotopes: 9
Electronic Shell: [ Xe ] 4f5 6s2
Energy Of First Ionisation: 534.6 kJ.mol -1  


No of Protons
Standard Potential: - 2.42 V

Electorn in Full Shell
Discoverd By: Discovered by Marinsky in 1945

Electorn in Partial Shell
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