atomic number 58

[Yespasmn 0]

a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group

[BertababySog]

The atomic number 58 refers to the element Cerium on the periodic table. It is a soft, ductile, and silvery-white metal that tarnishes when exposed to air. The atomic number represents the number of protons found in the nucleus of the atom of this element.