kanyatan bab Actinium lan Nihonium
Facts Interesting
ora Cepak
ora Cepak
sumber
Dijupuk dening Nambani Radium karo Neutron, Ores logam
sintetik Diprodhuksi
sing katutup
Friedrich Oskar Giesel
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
Discovery
ing taun 1902
ing 2003