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(OIL) = Oxidation Is Lost
Oxidized = Increase in Oxidation State = Electrons Lost => Reducing Agent
(RIG) = Reduction Is Gain
Reduced = Decrease in Oxidation State = Electrons Gained => Oxidizing Agent
(G1) is 0
For an atom in its elemental form the oxidation state is ___.
(G2) oxidation state = ionic charge
For a monatomic ion, the ___ equals the ___.
(G3) Neutral compound = 0 ; Ionic charge = oxidation states
The sum of oxidation states for the atoms in a neutral compound must equal ___. ___ is equal to the sum of ___ for polyatomic ions.
(S1) +1
Group 1(Alkali metals) Take oxidation state ___ in all compounds.
(S2) +2
Group 2 (Alkaline Earth metals) take oxidation state +2 in all compounds.
(S3) Nonmetals = +1 ; Metals or boron = -1
Hydrogen takes oxidation state ___ in combination with nonmetals, ___ in combination with metals or boron.
(S4) -1
Fluorine takes oxidation state ___ in all compounds.
(S5) -2 EXCEPT in Peroxide -1 or Fluorine
Oxygen takes oxidation state ___ EXCEPT in ___ compounds (oxidation state ___) or when combined with
___.
(S6) -1 EXCEPT
Group 17 (Halogens) Usually take oxidation state ___, except when combined with oxygen or another halogen higher in the group