Problem: Which of the following is the correct name for FePO 3?A. iron(III) phosphate, ferric phosphateB. iron(II) phosphate, ferrous phosphateC. iron(III) phosphite, ferric phosphiteD. iron(II) phosphite, ferrous phosphiteE. iron phosphorus trioxide

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Establish the rules in naming binary ioninc compounds and determine the name of FePO3. The rules for naming binary ionic compounds are as follows:


1. The metal keeps its name, and is named and written first.

– For transition metals, we use Roman numerals to denote its charge.


2. The nonmetal keeps its base name but has its ending change to –ide.

  – For polyatomic anions, the name will appear as is

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Problem Details

Which of the following is the correct name for FePO 3?

A. iron(III) phosphate, ferric phosphate
B. iron(II) phosphate, ferrous phosphate
C. iron(III) phosphite, ferric phosphite
D. iron(II) phosphite, ferrous phosphite
E. iron phosphorus trioxide


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