Promethium

Element information

Atomic properties

Mass: 144.91276 u

Electron configuration: [Xe]6s2 4f5

Oxidation states: +3

Electronegativity: -

Physical properties

Density: 7.26 g/cm³

Standard state: solid

Melting point: 1315 K

Boiling point: 3273 K

₆₁Pm

Part of the Periodic Table 2 collection

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