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DescriptionIUPAC Periodic Table of the Elements 2011.jpg
English: Excerpt of the IUPAC Periodic Table of the Elements (21 Jan 2011) showing the interval notation of the standard atomic weights of boron, carbon, and nitrogen (Chemistry International, IUPAC)
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{{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|Excerpt of the IUPAC Periodic Table of the Elements (21 Jan 2011) showing the interval notation of the standard atomic weights of boron, carbon, and nitrogen (Chemistry Interna...