We’re being asked to recognize theoxidation state that phosphorusinPO43– (phosphate ion).
You are watching: Oxidation number of p in phosphate ion
Therules because that oxidation statesare as follows:
A. General Rules:
1. For an atom in that elemental kind (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. Because that an ion (Li+, Al3+, etc.) O.S. = charge
B. Specific Rules:
1. Group 1A O.S. = +1
2. Team 2A O.S. = +2
3. Hydrogen O.S. = +1, with nonmetals
O.S. = –1 v metals and boron
4. Fluorine O.S. = –1
5. Oxygen O.S. = –1 in peroxides (X2O2, X = group 1A)
O.S. = –1/2 in superoxides (XO2, X = team 1A)
O.S. = –2 in various other compounds
6. Team 7A O.S. = –1 (except when bonded come O)
Since PO43– is neither a peroxide or superoxide,the oxidation state of every oxygen atom is –2.
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What is the oxidation number of phosphorus in PO43−?
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