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# **Polyatomic Ions

### High priority ions duplicated for higher "flash frequency".

Polyatomic Ions | Polyatomic Ions |
---|---|

formula for ammonium?*** | NH4 (+1) |

formula for sulfite?** | SO3 (-2) |

NO2 (-1) | nitrite** |

formula for chlorate?* | ClO3 (-1) |

formula for chlorite?* | ClO2 (-1) |

formula for perchlorate?* | ClO4 (-1) |

formula for hypochlorite?* | ClO (-1) |

formula for chromate?* | CrO4 (-2) |

formula for cyanide?* | CN (-1) |

formula for thiocyanate? | SCN (-1) |

formula for phosphite?** | PO3 (-3) |

formula for hydrogen phosphate?** | HPO4 (-2) |

formula for dihydrogen phosphate?** | H2PO4 (-1) |

formula for hydrogen sulfate?* | HSO4 (-1) |

formula for hydrogen sulfite? | HSO3 (-1) |

Aside from hydronium (H3O+), what's the only common polyatomic cation?*** | Ammonium. Professors LOVE to test you on this one. |

formula for acetate?** | CH3COO (-1) |

formula for bromite? | BrO2 (-1) |

formula for bromate? | BrO3 (-1) |

formula for chromite?* | CrO2 (-1) |

formula for hydronium?*** | H3O (+1...water with an added H+) |

formula for iodate? | IO3 (-1) |

formula for iodite? | IO2 (-1) |

formula for perbromate? | BrO4 (-1) |

peroxide** | O2 (-2) |

formula for sulfate?*** | SO4 (-2) |

formula for phosphate?*** | PO4 (-3) |

formula for carbonate?*** | CO3 (-2) |

formula for nitrite?*** | NO2 (-1) |

"Per___ate" has [one more, one fewer] O than "___ate"? | one more |

"___ate has [one more, one fewer] O than "___ite"? | one more |

"Hypo___ite" has [one more, one fewer] O than "___ite"? | one fewer |

How does charge differ between the ates, ites, per___ates and hypo___ites? | The charge (almost always) stays the same, but the number of O changes. |

formula for carbonate?*** | CO3 (-2) |

formula for hydroxide?*** | OH (-1) |

NH4 (+1) | ammonium*** |

formula for chlorate?* | ClO3 (-1) |

Do any monoatomic ions end in "ite"? | Nope, they are usually "ides" like chloride, fluoride, etc. |

formula for nitrate? | NO3 (-1) |

formula for hydrogen carbonate?*** | HCO3 (-1) |

CO3 (-2) | carbonate*** |

SO3 (-2) | sulfite** |

SO4 (-2) | sulfate*** |

HCO3 (-1) | hydrogen carbonate*** |

OH (-1) | hydroxide*** |

ClO4 (-1) | perchlorate** |

ClO3 (-1) | chlorate** |

ClO2 (-1) | chlorite** |

ClO (-1) | hypochlorite* |

O2 (-2) | peroxide* |

CH3COO (-1) | acetate** |

CN (-1) | cyanide** |

NO3 (-1) | nitrate*** |

BrO2 (-1) | bromite |

BrO3 (-1) | bromate |

H3O (+1) | hydronium*** |

IO3 (-1) | iodate |

IO4 (-1) | periodate |

IO2 (-1) | iodite |

IO (-1) | hypoiodite |

PO3 (-3) | phosphite** |

Do any monoatomic ions end in "ate"? | No. They are usually "ides" like chloride, iodide, etc. |

formula for periodate? | IO4 (-1) |

Created by:
Seussian Physics