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: [[Cerium]] is [[ductile]].
==Key Stage 4==
[[File:CeKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Cerium]].]]
===Meaning===
[[Cerium]] is a [[Lanthanide]] [[metal]] [[element]], on the [[Periodic Table]], with 58 [[proton]]s in the [[Atomic Nucleus|nucleus]].