Arsenic - element information, properties , Glossary. group a vertical column in the periodic table. members of a group typically have similar properties and electron configurations in their outer shell.. Chem4kids.: elements & periodic table: periodic table, Chem4kids.com! this tutorial introduces the periodic table. other sections include matter, elements, reactions, and biochemistry.. Chemicool - periodic table elements chemistry, Award winning periodic table with user-friendly element data and facts. cool online chemistry videos, dictionary, tools, etc..

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