334627
Description
Flashcards by eimearkelly3, updated more than 1 year ago
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Created by eimearkelly3
almost 12 years ago
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| Question | Answer |
| Oxidation number | The charge that the atom appears to have when the electrons are distributed according to certain rules |
| oxidation numbers in free elements | 0 |
| sum of all the oxidation numbers of all the atoms in a molecule | 0 |
| oxidation number of a simple ion | the charge on the atom e.g. Cl- = -1 |
| sum of all the atoms in a complex ion | equal to the charge on the ion similar to simple ions |
| hydrogen oxidation number | +1 |
| oxidation number of hydrogen in metallic hydrides | -1 |
| oxidation number of oxygen | -2 |
| oxidation number of oxygen in hydrogen peroxide | -1 |
| oxidation number of oxygen when bonded to fluorine | +2 |
| oxidation number of the group one elements | +1 |
| oxidation number of the group two elements | +2 |
| oxidation number of a halogen when bonded to a less electronegative atom | _1 |
| most electronegative element | fluorine |
| oxidation number of fluorine | -1 |
| oxidation number of chlorine when not bonded to oxygen or fluorine | -1 |
| naming of a compound containing two elements only | -ide with oxidation number in brackets after the name of the metal |
| naming a compound with a complex ion | name ends with the name of the ion with the oxidation number in brackets after the metal |
| naming of a compound containing water of crystallisation | the number of molecules of water of crystallisation is indicated at the end of the name with the oxidation number after the name of the metal |
| oxidation in terms of oxidation number | increase in oxidation number |
| reduction in terms of oxidation number | decrease in oxidation number |
| reducing bleach | sodium sulfite used in the paper industry |
| oxidising bleach | sodium hypochlorite (NaOCl) |
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