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11 Cards in this Set
- Front
- Back
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Uncombined elements (standard state) |
0 |
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Group 1 metals |
+1 |
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Group 2 metals |
+2 |
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Aluminium metal |
+3 |
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Hydrogen |
+1 except with group 1 or 2 metals where it is -1 |
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Flourine |
-1 because it is most electronegative |
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Oxygen |
-2 Except in (H2O2) hydrogen peroxide where it is -1 And in compounds with Flourine where it is positive |
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Chlorine Cl |
-1 except with oxygen and flourine where it is positive |
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Sum of oxidation numbers in a compound |
Always 0 since all compounds are electrically neutral |
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Ion made from a single atom |
Value of charge on ion |
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Sum of oxidation numbers of polyatomic atom |
Equal to charge of ion |
