Multiple Choice
Which of the following is the correct chemical formula for aluminum chloride?
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3. Chemical Reactions
Naming Ionic Compounds
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What is the correct name for the compound with the formula Sn(CrO4)2?
A
tin(II) dichromate
B
tin(IV) dichromate
C
tin(II) chromate
D
tin(IV) chromate
Verified step by step guidance1
Identify the cation and anion in the compound formula Sn(CrO4)2. Here, Sn is the cation (tin), and CrO4 is the anion (chromate).
Determine the charge of the chromate ion (CrO4). The chromate ion has a charge of -2.
Since there are two chromate ions, the total negative charge contributed by the anions is 2 × (-2) = -4.
To balance the total negative charge of -4, the tin cation must have a charge of +4. This means the tin is in the +4 oxidation state.
Name the compound by indicating the metal with its oxidation state in Roman numerals followed by the name of the anion. Since tin is +4 and the anion is chromate, the correct name is tin(IV) chromate.
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