객관식
Which of the following is the correct chemical formula for aluminum dichromate?
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3. Chemical Reactions
Naming Ionic Compounds
객관식
Provide the name for the following compound:CoCO3
A
cobalt carbonate
B
cobalt (II) carbonate
C
cobalt carbonite
D
cobalt (III) carbonite
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검증된 단계별 안내1
Identify the chemical formula given: CoCO₃.
Recognize that Co represents cobalt and CO₃ represents the carbonate ion.
Determine the oxidation state of cobalt in CoCO₃. Carbonate (CO₃²⁻) has a charge of -2, so cobalt must have a +2 charge to balance the compound, making it cobalt (II).
Combine the name of the metal with its oxidation state and the name of the polyatomic ion: cobalt (II) carbonate.
Understand that cobalt (III) carbonite is incorrect because it suggests a different oxidation state and a different polyatomic ion (carbonite, which is not present here).
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