58 Ce 140.1161
Cerium
LANTHANIDE
Phase: Solid
Discovered: Martin Heinrich Klaproth
Block: F
Summary
Cerium is a chemical element with symbol Ce and atomic number 58. It is a soft, silvery, ductile metal which easily oxidizes in air. Cerium was named after the dwarf planet Ceres (itself named after the Roman goddess of agriculture).
Source: WikipediaPhysical Properties
Atomic Mass 140.1161 u
Density 6.77 g/cm³
Melting Point 1068 K
Boiling Point 3716 K