
Concept explainers
Interpretation:
The charge on phosphate ion in
Concept introduction:
An ionic compound is formed from a cation and an anion where cation has positive charge and anion has negative charge. The cation with positive charge is written first followed by the anion in the chemical formula of the ionic compounds.

Answer to Problem 6E
The charge on phosphate ion in
Explanation of Solution
Calcium phosphate,
To form a neutral ionic compound, the subscript of Ca represents the charge on phosphate ions and the subscript of phosphate ion represents the charge on calcium.
Thus, the charge on Ca is + 2. Similarly, the charge on phosphate ion would be -3.
Thus, the charge on phosphate ion in
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