Writing Ionic Formulas

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.

Front

What is the charge of a calcium ion?

Back

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

Front

What is the formula for calcium phosphate?

Back

The formula for calcium phosphate is Ca₃(PO₄)₂.

Front

How do you determine the formula of an ionic compound?

Back

To determine the formula, balance the total positive and negative charges of the ions.

Front

What is the charge of a chromium ion in Cr(NO₂)₃?

Back

The charge of chromium in Cr(NO₂)₃ is +3.

Front

What is the formula for sodium phosphate?

Back

The formula for sodium phosphate is Na₃PO₄.

Front

What is the charge of a sodium ion?

Back

The charge of a sodium ion (Na) is +1.

Front

What is the charge of a fluoride ion?

Back

The charge of a fluoride ion (F) is -1.

Front

What is the formula for the compound formed by Cr³⁺ and O²⁻?

Back

The formula is Cr₂O₃.

Front

What is the name of the compound Cr(NO₂)₃?

Back

The name of the compound is chromium III nitrite.