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Date: 2014-09-15 16:11:49Baryons Nuclear physics Geiger–Marsden experiment Science Alpha particle Atomic theory Ernest Rutherford Atomic nucleus Proton Physics Chemistry Radioactivity | Microsoft Word - Radioactive Atom Activities_081814.docAdd to Reading ListSource URL: epa.govDownload Document from Source WebsiteFile Size: 313,72 KBShare Document on Facebook |