Cerium, kashi 58 na tebur na lokaci-lokaci. Cerium shine mafi ƙarancin ƙarfe na duniya, kuma tare da sinadarin yttrium da aka gano a baya, yana buɗe kofa ga gano wasu abubuwan da ba kasafai ba a duniya. A shekara ta 1803, masanin kimiya na Jamus Klaprott ya gano wani sabon sinadari oxide a cikin wani babban dutse mai nauyi mai ja...
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