←La   Sn↑   ↓Hf   Pr→

Cer ∙ cérium ∙ cerio ∙ cerio
group IV: RH₄, RO₂

• melting point: 798°C ±3°C
• boiling point: 3433°C
• density: 6.78 g/cm³

Cerium alloys are pyrophoric. — theodoregray

⚒ minerals:
Monazite-(Ce) Ce(PO₄)

A 3.7 PBq source of ¹⁴⁴Ce/ ¹⁴⁴Pr was ordered for the 2018 Gran Sasso SOX experiment [… but was never delivered]. — iopscience

☢ radioisotopes:
Ce-141 (T1/2=32.5 d) fission product
Ce-144 (T1/2=285 d) fission product

Its redox chemistry makes it an ideal catalyst to produce solar fuels. — CCEM