![]() This database focuses on the most common chemical compounds used in the home and industry. Molar mass calculations are explained and there is a JavaScript calculator to aid calculations. Molar Mass Calculations and Javascript Calculator.Introduces stoichiometry and explains the differences between molarity, molality and normality. Related ResourcesĪnswers many questions regarding the structure of atoms. Common Chemical Compounds of Oxygen ReferencesĪ list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.BR % = Branch Ratio (as a percentage) Oxygen Menu.It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Syn = Synthetic Nuclide (does not occur in nature) Oxygen is the chemical element with the symbol O and atomic number 8.Abun % = Natural Abundance (as a percentage). ![]() Sulfur is frequently found as yellow crystalline deposits of essentially pure S 8 in areas of intense. Of the group 16 elements, only sulfur was known in ancient times the others were not discovered until the late 18th and 19th centuries. Oxygen accounts for nearly half of the mass of the. Skip to site menu on this page Periodic Table of Elements O - Oxygen Oxygen Menu Oxygen is the third most abundant element in the universe and makes up nearly 21 of the earths atmosphere.
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