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Elements. 1-20. O. Oxygen. C. Carbon. Al. Aluminum. Mg. Magnesium. Ar. Argon. Ca. Calcium. K. Potassium. N. Nitrogen. Li. Lithium. P. Phosphorous. H. Hydrogen. Cl. Chlorine. He. Helium. Si. Silicon. S. Sulfur. Be. Beryllium. B. Boron. F. Fluorine. Ne. Neon. - PowerPoint PPT Presentation
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