- 50
- 25
- 75
- 33
- low blood pressure
- edema
- heart attack
- blindness
- Cu to Zn in the cell
- Cu to Zn outside cell
- Zn to Cu in the cell
- Zn to Cu outside cell
- Na and C
- K and O
- O and Cl
- Al and I.
- –1 only
- Zero only
- +1, –1, 0
- +1 only
- Increase in oxidation number
- Decrease in oxidation number
- No change in oxidation number
- none of the above
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