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Questions and Answers
What is the correct charge of the sulfate ion?
What is the correct charge of the sulfate ion?
- -2 (correct)
- +1
- +2
- -1
Which of the following polyatomic ions has a charge of +1?
Which of the following polyatomic ions has a charge of +1?
- Ammonium (correct)
- Carbonate
- Acetate
- Nitrate
Identify the ion that has one less oxygen atom than its corresponding '-ate' ion.
Identify the ion that has one less oxygen atom than its corresponding '-ate' ion.
- Phosphate
- Hydroxide
- Nitrite (correct)
- Sulfite
Which of the following ions is represented by the symbol PO₄⁻³?
Which of the following ions is represented by the symbol PO₄⁻³?
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Which polyatomic ion is correctly paired with its charge?
Which polyatomic ion is correctly paired with its charge?
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Study Notes
Common Polyatomic Ions
- Polyatomic ions are groups of atoms that act as a single unit with a charge.
- The table lists common polyatomic ions with their symbols and charges.
- Ammonium (NH₄⁺¹) has a charge of +1.
- Acetate (C₂H₃O₂⁻¹) has a charge of -1.
- Hydroxide (OH⁻¹) has a charge of -1.
- Nitrate (NO₃⁻¹) has a charge of -1.
- Nitrite (NO₂⁻¹) has a charge of -1.
- Carbonate (CO₃⁻²) has a charge of -2.
- Sulfate (SO₄⁻²) has a charge of -2.
- Sulfite (SO₃⁻²) has a charge of -2.
- Phosphate (PO₄⁻³) has a charge of -3.
- Polyatomic ions with "-ite" endings have one less oxygen atom compared to the "-ate" ending. They have the same charge.
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