Oxidation states

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7 Terms

1
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Oxidation states show...

loss or gain of electrons

2
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Ions = number first (1+)

Oxidation states = ... first (+1)

charge

3
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Oxidation state rules:

1. More electronegative element = negative ... ...

2. Metals = positive oxidation state

3. Pure element = 0

4. H = +1 unless w metal

5. O = -2 unless peroxide

oxidation state

4
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Fluorine never positive as it's the...

most electronegative element

5
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Charge = only ions

Oxidation = every...

atom in a molecule

6
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ate = positive- gained...

ide = negative- lost oxygen

oxygen

7
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Roman numeral = .. .. of element

e.g. Iron(III) oxide = Fe3+

oxidation state