Multiple Choice
Which of the following is the correct chemical formula for iron(III) fluoride?
42
views
3. Chemical Reactions
Naming Ionic Compounds
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is the correct chemical formula for copper(I) iodide?
A
Cu2I2
B
CuI
C
Cu2I
D
CuI2
Verified step by step guidance1
Identify the oxidation state of copper in copper(I) iodide. The Roman numeral I indicates that copper has a +1 charge (Cu⁺).
Determine the charge on the iodide ion. Iodide (I⁻) has a charge of -1.
Balance the charges to form a neutral compound. Since Cu⁺ and I⁻ have charges of equal magnitude but opposite sign, they combine in a 1:1 ratio.
Write the chemical formula by combining one Cu⁺ ion with one I⁻ ion, resulting in CuI.
Verify that the formula CuI is electrically neutral and correctly represents copper(I) iodide.
2:11mWatch next
Master Ionic Compounds Naming with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Naming Ionic Compounds practice set
Problem sets built by lead tutorsExpert video explanations