Multiple Choice
What is the correct name for the ionic compound Ba(OH)2?
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3. Chemical Reactions
Naming Ionic Compounds
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What is the correct name for the ionic compound Li3PO4?
A
Lithium phosphate
B
Lithium phosphite
C
Lithium phosphide
D
Lithium polyphosphate
Verified step by step guidance1
Identify the cation and anion in the compound Li3PO4. The cation is Li⁺ (lithium ion) and the anion is PO4³⁻ (phosphate ion).
Recall the naming convention for ionic compounds: the cation (metal) name is stated first, followed by the name of the anion.
Recognize that PO4³⁻ is the phosphate ion, which is a common polyatomic ion with the name 'phosphate'.
Combine the names of the cation and anion without changing their names or adding prefixes, since this is an ionic compound and the formula already shows the correct ratio.
Conclude that the correct name for Li3PO4 is 'lithium phosphate' because lithium is the metal cation and phosphate is the polyatomic anion.
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