Multiple Choice
Which of the following is the correct IUPAC name for Pb(NO3)2?
3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct name for the compound FeCl3?
A
Iron(III) chloride
B
Ferrous chloride
C
Ferric chloride
D
Iron(II) chloride
Verified step by step guidance1
Identify the metal in the compound FeCl3, which is iron (Fe).
Determine the charge on the iron ion by considering the charge of the chloride ions. Each chloride ion (Cl) has a charge of -1, and there are three chloride ions, so the total negative charge is -3.
Since the compound is neutral overall, the iron ion must have a charge of +3 to balance the -3 from the chlorides.
Use the Stock system for naming transition metal compounds, which indicates the oxidation state of the metal in Roman numerals in parentheses. Here, iron has a +3 charge, so it is Iron(III).
Combine the metal name with its oxidation state and the name of the anion (chloride) to get the full name: Iron(III) chloride.
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