Ionic Formulas

Front

What is an ionic formula?

Back

An ionic formula represents the ratio of ions in a compound, showing how many of each ion are present to balance the overall charge.

Front

How do you determine the formula for ionic compounds?

Back

To determine the formula, identify the charges of the ions, then combine them in a ratio that results in a neutral compound.

Front

What is the charge of a calcium ion?

Back

The charge of a calcium ion (Ca) is +2.

Front

What is the charge of a nitrogen ion?

Back

The charge of a nitrogen ion (N) is -3 when it gains three electrons.

Front

What is the formula for the ionic compound formed by calcium and nitrogen?

Back

The formula is Ca3N2.

Front

What is the charge of a potassium ion?

Back

The charge of a potassium ion (K) is +1.

Front

What is the formula for the ionic compound formed by potassium and nitrogen?

Back

The formula is K3N.

Front

What is the charge of a barium ion?

Back

The charge of a barium ion (Ba) is +2.

Front

What is the formula for the ionic compound formed by barium and nitrogen?

Back

The formula is Ba3N2.

Front

How many electrons does phosphorus need to gain to achieve a full octet?

Back

Phosphorus needs to gain 3 electrons.