Practice formulas with polyatomic ions

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged ion composed of two or more atoms covalently bonded, which can be considered as a single unit.

Front

What is the formula for ammonium ion?

Back

The formula for ammonium ion is NH₄⁺.

Front

What is the formula for sulfate ion?

Back

The formula for sulfate ion is SO₄²⁻.

Front

What is the formula for phosphate ion?

Back

The formula for phosphate ion is PO₄³⁻.

Front

What is the formula for hydroxide ion?

Back

The formula for hydroxide ion is OH⁻.

Front

How do you determine the formula for a compound containing polyatomic ions?

Back

To determine the formula, balance the total positive and negative charges by using subscripts for the ions.

Front

What is the correct formula for aluminum sulfate?

Back

The correct formula for aluminum sulfate is Al₂(SO₄)₃.

Front

What is the correct name for Ca(NO₃)₂?

Back

The correct name for Ca(NO₃)₂ is Calcium nitrate.

Front

What is the correct formula for nickel (III) sulfate?

Back

The correct formula for nickel (III) sulfate is Ni₂(SO₄)₃.

Front

What is the correct formula for ammonium sulfate?

Back

The correct formula for ammonium sulfate is (NH₄)₂SO₄.