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5 Cards in this Set
- Front
- Back
- 3rd side (hint)
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what is oxidation number?
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the measure of the number of electron an atom uses to bond with other atoms of another element.
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the measure.
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Oxidation number rules
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1.Uncombined element has 0 oxidation no.
2. Combined oxygen has -2 eg. H20 3.Combined hydrogen has +1. 3.simple ion has its oxidation as the charge on the ion. 4.combined flourine is -1. |
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overall charge of SO2?
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is 0. we 2 oxygen atoms so -2 each cancelling out the +4 of the sulphur atom.
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Oxidation number for CO3/ Carbonate ion?
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is 2-. there are 3 oxygen atoms each with 2- making a total of -6. this will cancel out the 4+ of the carbon. leaving 2-.
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what's an oxyanions?
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they are negative ions that contain an element along with oxygen. eg. NO3-.
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