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Chemistry Polyatomic Ions. Polyatomic Ions – List 1 NitrateNO 3 - NitriteNO 2 - SulfateSO 4 2- SulfiteSO 3 2- PhosphatePO 4 3- PhosphitePO 3 3- ArsenateAsO.

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Presentation on theme: "Chemistry Polyatomic Ions. Polyatomic Ions – List 1 NitrateNO 3 - NitriteNO 2 - SulfateSO 4 2- SulfiteSO 3 2- PhosphatePO 4 3- PhosphitePO 3 3- ArsenateAsO."— Presentation transcript:

1 Chemistry Polyatomic Ions

2 Polyatomic Ions – List 1 NitrateNO 3 - NitriteNO 2 - SulfateSO 4 2- SulfiteSO 3 2- PhosphatePO 4 3- PhosphitePO 3 3- ArsenateAsO 4 3- SilicateSiO 3 2-

3 Patterns in Naming Polyatomic Ions Memorize the ates (contains oxygen) ite means one less oxygen than an ate per prefix means one more oxygen than an ate hypo prefix means one less oxygen than an ite Some polyatomic ions have names that do not follow these patterns.

4 Polyatomic Ions – List 2 Hydrogen sulfateHSO 4 - * Hydrogen phosphateHPO 4 2- Dihydrogen phosphateH 2 PO 4 - * CarbonateCO 3 2- Hydrogen carbonateHCO 3 - * ChromateCrO 4 2- DichromateCr 2 O 7 2-

5 Alternate names The bi prefix means to replace one of the hydrogens from the acid made from that polyatomic ion with a metal cation. Acid NameTake away a hydrogenOld name using bi prefix Sulfuric acid H 2 SO 4 Hydrogen Sulfate HSO 4 - Bisulfate HSO 4 - Phosphoric acid H 3 PO 4 Dihydrogen Phosphate H 2 PO 4 - Biphosphate H 2 PO 4 - Carbonic acid H 2 CO 3 Hydrogen Carbonate HCO 3 - Bicarbonate HCO 3 - *Bicarbonate of Soda Sodium Bicarbonate Baking Soda (NaHCO 3 )

6 Polyatomic Ions – List 3 HypochloriteClO - ChloriteClO 2 - ChlorateClO 3 - PerchlorateClO 4 - IodateIO 3 - PeriodateIO 4 - BromateBrO 3 - PermanganateMnO 4 -

7 Polyatomic Ions – List 4 HydroniumH3O+H3O+ AmmoniumNH 4 + Mercury IHg 2 2+ AcetateC 2 H 3 O 2 - or CH 3 COO - CyanideCN - HydroxideOH - OxalateC 2 O 4 2- PeroxideO 2 2-


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