Definition for Hydrogen
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Revision as of 21:49, 5 March 2013 by Bio man (Talk | contribs) (Created page with "Hydrogen is a chemical element with symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element and its monatomic form is the most abundant...")
Hydrogen is a chemical element with symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element and its monatomic form is the most abundant chemical substance.