Phosphate Compounds and Ions

The video tutorial explains how to name the compound Ba3(PO4)2 as barium phosphate. It covers the identification of barium as a metal and PO4 as a polyatomic ion, specifically the phosphate ion. The tutorial emphasizes the importance of balancing charges to write the correct chemical formula, resulting in three barium ions and two phosphate ions. The video also highlights that barium, being in group 2, does not require Roman numerals in its name.

What type of compound is Ba3(PO4)2?

• Covalent compound

• Organic compound

• Metallic compound

• Ionic compound

What is the name of the polyatomic ion PO4?

• Carbonate

• Phosphate

• Nitrate

• Sulfate

Why don't we use Roman numerals in the name of barium phosphate?

• Barium is a transition metal

• Barium has a fixed charge

• The compound is covalent

• Phosphate is a transition ion

What is the charge of a barium ion?

• 2+

• 1+

• 3+

• 4+

How many barium ions are needed to balance the charge of two phosphate ions?

• 4

• 1

• 2

• 3

What is the correct formula for barium phosphate?

• Ba3(PO4)2

• Ba3(PO4)3

• Ba2(PO4)3

• Ba(PO4)2

What is the charge of the phosphate ion?

• 4-

• 1-

• 2-

• 3-