Cerium is a silvery metal, belonging to the lanthanide group. It resembles iron in colour and lustre, but is soft, and both malleable and ductile. Cerium has the longest liquid range of any non-radioactive element: 2648 °C (795 °C to 3443 °C) or 4766 °F (1463 °F to 6229 °F). (Thorium has a longer liquid range.)
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