A.AlO

1
What is the chemical formula for a compound made
of aluminum ions, Al3, and oxygen ions, O2?
The Ionic Bond CHECK YOUR NEIGHBOR

• A. AlO
• Al3O2
• Al2O3
• Al6O6

2
What is the chemical formula for a compound made
of aluminum ions, Al3, and oxygen ions, O2?
The Ionic Bond CHECK YOUR ANSWER

• A. AlO
• Al3O2
• Al2O3
• Al6O6

3
What is the chemical formula for a compound made
of magnesium ions, Mg2, and oxygen ions, O2?
The Ionic Bond CHECK YOUR NEIGHBOR

• A. MgO
• Mg2O2
• Mg4O4
• Any of the above

4
What is the chemical formula for a compound made
of magnesium ions, Mg2, and oxygen ions, O2?
The Ionic Bond CHECK YOUR ANSWER

• A. MgO
• Mg2O2
• Mg4O4
• Any of the above

Explanation The chemical formula is used to show
the ratio by which atoms combine. By convention,
the lowest numbers are preferred, so 11 is used
rather than 22. The numeral 1, however, is
implied when no subscript is written.