standard ions

The formula for the phosphate ion is…

• PO₄^1-

• PO₃^2-

• PO₃^3-

• PO₄^3-

• PO₄^2-

The formula for the carbonate ion is…

• CO₂^1-

• CO₃^2-

• CO₃^1-

• CO₂^3-

• CO₄^2-

The formula for the sulphate ion is…

• SO₃^2-

• SO₃^3-

• SO₄^3-

• SO₄^2-

• SO₄^1-

The formula for the nitrate ion is…

• NO₃^2-

• NO₃^1-

• NO₂^3-

• NO₄^2-

• NO₂^1-

The formula for the chlorate ion is…

• ClO₃^1-

• ClO₂^3-

• ClO₃^2-

• ClO₄^2-

• ClO₂^1-

The formula for the bromate ion is…

• BrO₂^3-

• BrO₃^2-

• BrO₄^2-

• BrO₃^1-

• BrO₂^1-

How many oxygen atoms does the sulphate ion have?

• 1

• 2

• 3

• 4

How many oxygen atoms does the phosphate ion have?

• 1

• 2

• 3

• 4

How many oxygen atoms does the carbonate ion have?

• 1

• 2

• 3

• 4

How many oxygen atoms does the nitrate ion have?

• 1

• 2

• 3

• 4