# Chemistry Examples

Since Ca is in column of the periodic table, it will share electrons and use an oxidation state of .
Since O is in column of the periodic table, it will share electrons and use an oxidation state of .
To find the oxidation state of , set up an equation of each oxidation state found earlier and set it equal to .
Solve the equation for .
Simplify the left side.
Multiply by to get .
Subtract from to get .
Since does not contain the variable to solve for, move it to the right side of the equation by adding to both sides.
is using an oxidation state of .
This is the full list of oxidation states for this molecule.

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