By: Crystal Jaeger
the Atomic number is 58, the atomic mass is 140. the symbol for Cerium is Ce. It costs $380for 100 grams.
It was named after the dwarf planet, Ceres. It was discovered in 1803 by Jön Jakob Berzelius and Wilhelm Hisinger. There is almost no Cerium in the atmosphere. Cerium is a grey metal that is malleable and one of the most reactive of the rare-earth metals. It can decompose slowly in cold water , and very rapidly in hot water.