Naming and Charges of Ionic Compounds

The video tutorial explains how to name the compound Fe3(PO4)2. It begins by identifying the components: iron, a transition metal, and the polyatomic ion phosphate. The tutorial then calculates the charge of iron by considering the charge of the phosphate ions, ensuring the overall charge of the compound is zero. Finally, the name Iron(II) Phosphate is derived, indicating the charge of iron with a Roman numeral.

What is the polyatomic ion present in the compound Fe3(PO4)2?

• Carbonate

• Sulfate

• Nitrate

• Phosphate

Which type of metal is iron classified as in the compound Fe3(PO4)2?

• Alkali metal

• Alkaline earth metal

• Transition metal

• Noble gas

What is the first step in naming the compound Fe3(PO4)2?

• Write the name of the metal

• Write the name of the polyatomic ion

• Identify the charge of the metal

• Determine the net charge

What is the charge of the phosphate ion in Fe3(PO4)2?

• 4-

• 3-

• 2-

• 1-

How many phosphate ions are present in Fe3(PO4)2?

• Three

• Two

• Four

• One

What is the total negative charge contributed by the phosphate ions in Fe3(PO4)2?

• 3-

• 6-

• 9-

• 12-

What is the charge on each iron atom in Fe3(PO4)2?

• 4+

• 2+

• 3+

• 1+

How is the charge of the iron atom indicated in the name of the compound?

• Using a prefix

• Using a suffix

• Using Roman numerals

• Using a subscript

What is the correct name for the compound Fe3(PO4)2?

• Iron phosphate

• Iron(III) phosphate

• Iron(II) phosphate

• Iron(IV) phosphate

Why is it important to balance the charges in an ionic compound?

• To ensure the compound is stable

• To make the compound more reactive

• To increase the compound's solubility

• To change the compound's color