Writing Ionic Formulas with Polyatomic Ions

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

What are polyatomic ions?

Back

Polyatomic ions are ions that consist of two or more atoms bonded together, which carry a net charge.

Front

How do you write the formula for Li⁺ and MnO₄^-?

Back

The formula is LiMnO₄.

Front

What is the charge of ammonium (NH₄)?

Back

The charge of ammonium is +1.

Front

How do you combine NH₄⁺ and C₆H₅O₇^-3?

Back

The formula is (NH₄)₃C₆H₅O₇.

Front

What is the charge of carbonate (CO₃)?

Back

The charge of carbonate is -2.

Front

How do you write the formula for Ni⁺³ and CO₂^-2?

Back

The formula is Ni₂(CO₂)₃.

Front

What is the formula for NH₄⁺ and OH^-?

Back

The formula is NH₄OH.

Front

What is the charge of chromium (Cr) in Cr⁺³?

Back

The charge of chromium in this case is +3.

Front

How do you combine Cr⁺³ and CO₃^-2?

Back

The formula is Cr₂(CO₃)₃.