A team of researchers at Lund University announced they had corroborated the 2004 findings in August 2013 by shooting calcium ions into a thin film of americium.
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Ununpentium should display eka-bismuth chemical properties and should therefore form a sesquioxide, Uup2O3, and analogous chalcogenides, Uup2S3, Uup2Se3 and Uup2Te3.