Air Earth Crust Oxygen on Earth H 2 O (oceans) O 2, CO 2 (atmosphere) CO 3 (rocks, coral, seashells) SiO 2, silicates (sand, clay, rocks) Made commercially.
Chemistry. The Lewis Theory 1.Valence electrons play a fundamental role in chemical bonding 2.Chemical bonding that results from the transfer of 1 or.
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