Multiple Choice
Which of the following is the correct chemical formula for cobalt(III) bromide?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following statements about naming ionic compounds is correct?
A
Roman numerals are used to indicate the charge of all cations, including Group 1 and Group 2 metals.
B
The anion is always named before the cation.
C
Prefixes such as di- and tri- are used to indicate the number of ions in ionic compounds.
D
The cation is named first, followed by the anion.
Verified step by step guidance1
Understand that ionic compounds are formed from cations (positively charged ions) and anions (negatively charged ions).
Recall that in naming ionic compounds, the cation is always named first, followed by the anion.
Know that Roman numerals are used only for transition metals and some other metals that can have multiple charges, but not for Group 1 and Group 2 metals, which have fixed charges.
Recognize that prefixes like di-, tri-, etc., are used in naming covalent (molecular) compounds to indicate the number of atoms, but not in ionic compounds.
Remember that the anion name typically ends with the suffix '-ide' and is placed after the cation name in the compound's name.
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