Problem: What is the oxidation state of an individual phosphorus atom in PO43-?Express the oxidation state numerically (e.g., +1).

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O → oxide → -2 OS

x as OS for P

(x) + 4(-2) = -3

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What is the oxidation state of an individual phosphorus atom in PO43-?

Express the oxidation state numerically (e.g., +1).

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