6.3 Naming and Writing Ionic Formulas

How is the name of the metal ion in an ionic compound determined?

The name of the metal ion is the same as its element name and is written first.

How is the name of the nonmetal ion in an ionic compound determined?

The name of the nonmetal ion is obtained by using the first syllable of its element name followed by "ide."

What are the steps to name the ionic compounds, and in this example, Mg3N2?

1. Identify the cation and anion: Mg2+ and N3-.

2. Name the cation: magnesium.

3. Name the anion: nitride.

4. Write the name: magnesium nitride.

How can the charge of an ion of a representative element be determined?

It can be obtained from its group number.

Can the charge of a transition element be predicted from its group number?

No, because transition elements typically form two or more positive ions.

What naming system is used for metals that form two or more types of ions?

A Roman numeral that is equal to the ionic charge is placed in parentheses immediately after the name of the metal.

What are some examples of transition metals that do not require Roman numerals when naming their cations?

Zinc (Zn^+2), cadmium (Cd^+2), and silver (Ag^+).

How do you determine the Roman numeral for a metal with variable charge?

By balancing the total positive and negative charges in the compound, this makes us see what charge our metal should have

What are the steps to write the formula for iron(III) chloride?

1. Identify the cation and anion: Fe3+ and Cl-.

2. Balance the charges: 1(3+) + 3(1-) = 0.

3. Write the formula using subscripts: FeCl3.