Polyatomic Ions

Polyatomic Ions - 2.8 Polyatomic Ions Ion Name Ion Name...

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2.8 Polyatomic Ions Ion Name Ion Name NH4+ Ammonium CO32- Carbonate CH3COO- Acetate HCO3- Bicarbonate OH- Hydroxide PO43- Phosphate NO3- Nitrate ClO3- Chlorate MnO4- Permanganate ClO4- Perchlorate Cr2O72- Dichromate SO42- Sulfate
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2.8 Polyatomic ions Write the formula for: Sodium nitrate Calcium hydroxide Write the name for: Na2SO4 CaCr2O7
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2.8 Naming: Ionic bond Ionic bonds are generally easy to name State the metal State the non-metal ending with –ide Example: MgI2 Magnesium iodide
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2.8 Transition metals Transition metals have more than one possible charge Thus there is no set ratio: FeCl2 and FeCl3 are both possible In FeCl2 the Fe is +2 (why?) FeCl3 the Fe is +3
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Periodic Table VIIIA +1 +2 +3 -3 -2 -1 Transition Metals
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2.8 Transition Metals You don’t need to memorize the ion charges You do need to figure out the charge on the metal in a compound Example: what’s the charge on Cr in Cr2O3?
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2.8 Transition Metals Naming transition metals is unique:
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Polyatomic Ions - 2.8 Polyatomic Ions Ion Name Ion Name...

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