Enter the ions present in a solution of K3PO4. Express your answers as chemical formulas separated by a comma. Offset subscripts and charges on each ion.

Explanation:

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In this case, since salts such as potassium phosphate are composed by a monoatomic cation (positive charge) and a polyatomic anion (negative), we infer that the ions present in a solution having this compound look like this:

Whereas the first one stands for potassium ions and the second one the phosphate ions.

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answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.