The formulas (including charges) for the given ions are to be determined. Concept Information: The element symbols and the subscripts in an ionic compound are represented with the help of a chemical formula. While writing the chemical formula for an ion, firstly, the cations and anions are to be identified and then, the correct formula and the charge on the cations and anions are to be determined. At last, the cations and anions are combined to produce an electrically neutral compound. Rules for writing formula for ionic compounds: The cation is given first in the formula. In the formula the subscripts must produce an electrically neutral formula unit. The subscripts must be the smallest set of whole numbers possible. The finished formula for substance does not include the charges on the ions. When a subscript is 1 it is left off, no subscript implies as subscript of 1.

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Chapter 2, Problem 42RQ

Interpretation Introduction

Interpretation:

The formulas (including charges) for the given ions are to be determined.

Concept Information:

The element symbols and the subscripts in an ionic compound are represented with the help of a chemical formula.

While writing the chemical formula for an ion, firstly, the cations and anions are to be identified and then, the correct formula and the charge on the cations and anions are to be determined. At last, the cations and anions are combined to produce an electrically neutral compound.

Rules for writing formula for ionic compounds:

The cation is given first in the formula.

In the formula the subscripts must produce an electrically neutral formula unit.

The subscripts must be the smallest set of whole numbers possible.

The finished formula for substance does not include the charges on the ions.

When a subscript is 1 it is left off, no subscript implies as subscript of 1.

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