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Title: In the United States, the letter A identifies the main group elements and the letter B indicates the ... Post by: MannyD on Feb 10, 2017 In the United States, the letter A identifies the main group elements and the letter B indicates the transition metal elements of the periodic table.
Title: Re: In the United States, the letter A identifies the main group elements and the letter B indicates ... Post by: BarryO on Feb 10, 2017 Content hidden
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