Multiple Choice
Which of the following is the correct chemical formula for the ionic compound formed between iron(III) (Fe^{3+}) and chloride (Cl^{-}) ions?
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3. Chemical Reactions
Naming Ionic Compounds
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What is the correct name for the ionic compound Zn2O?
A
Zinc(II) oxide
B
Zinc peroxide
C
Zinc oxide
D
Zinc(I) oxide
Verified step by step guidance1
Identify the ions present in the compound Zn2O. Zinc (Zn) is a metal that can have multiple oxidation states, and oxygen (O) typically forms the oxide ion with a charge of -2.
Determine the total charge contributed by the oxygen ion. Since oxygen is O²⁻, it contributes a charge of -2.
Calculate the charge on each zinc ion based on the formula Zn₂O. There are 2 zinc atoms, so the total positive charge must balance the -2 charge from oxygen. Therefore, each zinc ion must have a charge of +1 to balance the -2 charge from one oxygen ion.
Name the compound using the oxidation state of zinc. Since each zinc ion has a +1 charge, the correct name includes the oxidation state in Roman numerals as Zinc(I).
Combine the cation and anion names to form the full name: Zinc(I) oxide.
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