◄ Nd   Tc ▲   ▼ Re   Sm ►

Promethium ∙ prométhium ∙ promezio ∙ promecio
group III: R₂O₃

• melting point: 1042 °C
• boiling point: 3000 °C (estimated)
• density: 6.475 g/cm³

☢ radioisotopes: Pm-147 (T1/2=2.6 a) fission product