Electron Configuration

[Xe] 6s2 4f5

Promethium is named for "Prometheus"
Melting Point: 930.85 oC
Boiling Point: 3511.85 oC
Heat of Vaporization: unknown
Heat of Fusion: 86.9 J/g
Specific Heat Capacity: unknown
Density: 6.475 g/cm3