Electric Potential
| Metal | Potential, Volts | Metal | Potential, Volts |
| Calcium | +2.20 | Hydrogen | 0.000 |
| Magnesium | +1.87 | Antimony | -0.190 |
| Aluminum | +1.30 | Arsenic | -0.320 |
| Manganese | +1.07 | Bismuth | -0.330 |
| Zinc | +0.758 | Copper | -0.345 |
| Chromium | +0.600 | Mercury | -0.799 |
| Iron | +0.441 | Silver | -0.800 |
| Cadmium | +0.398 | Platinum | -0.863 |
| Nickel | +0.220 | Gold | -1.100 |
Some metals give up electrons more easily then others.
This difference is exploited in a battery to create a flow of electrons.
The above table can be used to calculate theoretical
voltages for various metal combinations.
Link
to more information about the electric potential of different metals.
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