Multiple Choice
What is the correct name for the ionic compound with the formula (NH_4)_2CrO_4?
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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
Ionic compounds are always named using Roman numerals for both the cation and anion.
B
The anion is named first, followed by the cation with its ending changed to -ate.
C
Prefixes such as mono-, di-, and tri- are used to indicate the number of ions in ionic compounds.
D
The cation is named first, followed by the anion with its ending changed to -ide.
Verified step by step guidance1
Understand that ionic compounds consist of cations (positively charged ions) and anions (negatively charged ions).
Recall the general rule for naming ionic compounds: the cation is named first, followed by the anion.
Know that the cation name is usually the element name (for metals), and the anion name is derived from the element name with its ending changed to '-ide' for simple ions.
Recognize that Roman numerals are used only for cations that can have multiple charges (transition metals), and not for anions.
Remember that prefixes like mono-, di-, and tri- are used in naming covalent (molecular) compounds, not ionic compounds.
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