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| Ions formed from a single atom. |
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| Compounds composed of two different elements. |
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| Polyatomic ions that contain oxygen. |
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| An ionic compound composed of a cation and the anion from an acid. |
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| A number that characterizes the oxidation state of an element in a compound. It is a full number, positive or negative, which indicates the amount of electron loss or gain by this element in the given compound, with respect to the neutral atom. |
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| A synonym for oxidation number. |
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| The ______ ____ of any molecule, formula unit, or ion is the sum of the average atomic masses of all the atoms represented in its formula. |
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| The percentage by mass of each element in a compound. |
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| Consists of the symbols for the elements combined in a compound, with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound. |
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