Questions: Naming Polyatomic Ionic Compounds Practice naming ionic compounds containing polyatomic ions. Li3PO4 CaSO4 Al(OH)3 Phosphate Sulfur Phosphide Oxygen hydride Hydride Calcium Oxygen Sulfate Aluminum Sulfide Lithium Hydroxide

Naming Polyatomic Ionic Compounds Practice naming ionic compounds containing polyatomic ions. Li3PO4 CaSO4 Al(OH)3 Phosphate Sulfur Phosphide Oxygen hydride Hydride Calcium Oxygen Sulfate Aluminum Sulfide Lithium Hydroxide
Transcript text: Naming Polyatomic Ionic Compounds Practice naming ionic compounds containing polyatomic ions. $\mathrm{Li}_{3} \mathrm{PO}_{4}$ $\mathrm{CaSO}_{4}$ $\mathrm{Al}(\mathrm{OH})_{3}$ § Phosphate § Sulfur Phosphide EOxygen hydride $\equiv$ Hydride Calcium 三Oxygen 三Sulfate $\equiv$ Aluminum 三 Sulfide $\equiv$ Lithium $\equiv$ Hydroxide
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Solution

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Solution Steps

Step 1: Identify the Polyatomic Ions

To name ionic compounds containing polyatomic ions, we first need to identify the polyatomic ions present in each compound.

  1. \(\mathrm{Li}_{3} \mathrm{PO}_{4}\): The polyatomic ion is \(\mathrm{PO}_{4}^{3-}\), which is called phosphate.
  2. \(\mathrm{CaSO}_{4}\): The polyatomic ion is \(\mathrm{SO}_{4}^{2-}\), which is called sulfate.
  3. \(\mathrm{Al}(\mathrm{OH})_{3}\): The polyatomic ion is \(\mathrm{OH}^{-}\), which is called hydroxide.
Step 2: Identify the Cations

Next, identify the cations in each compound.

  1. \(\mathrm{Li}_{3} \mathrm{PO}_{4}\): The cation is \(\mathrm{Li}^{+}\), which is lithium.
  2. \(\mathrm{CaSO}_{4}\): The cation is \(\mathrm{Ca}^{2+}\), which is calcium.
  3. \(\mathrm{Al}(\mathrm{OH})_{3}\): The cation is \(\mathrm{Al}^{3+}\), which is aluminum.
Step 3: Name the Compounds

Combine the names of the cations and the polyatomic ions to name the compounds.

  1. \(\mathrm{Li}_{3} \mathrm{PO}_{4}\): Lithium phosphate
  2. \(\mathrm{CaSO}_{4}\): Calcium sulfate
  3. \(\mathrm{Al}(\mathrm{OH})_{3}\): Aluminum hydroxide

Final Answer

  1. \(\mathrm{Li}_{3} \mathrm{PO}_{4}\): \(\boxed{\text{Lithium phosphate}}\)
  2. \(\mathrm{CaSO}_{4}\): \(\boxed{\text{Calcium sulfate}}\)
  3. \(\mathrm{Al}(\mathrm{OH})_{3}\): \(\boxed{\text{Aluminum hydroxide}}\)
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