Zinc Phosphate and Polyatomic Ions

The video tutorial explains how to name and derive the formula for Zn3(PO4)2, known as zinc phosphate. It begins by identifying the components: zinc, a transition metal, and the phosphate ion, a polyatomic ion. The tutorial outlines the naming process, emphasizing that zinc's charge is always 2+, simplifying the naming to zinc phosphate. It then explains how to derive the formula from the name, ensuring the charges balance to zero, resulting in the formula Zn3(PO4)2. The video concludes with a summary of the naming and formula derivation process.

What is the polyatomic ion present in Zn3(PO4)2?

• Sulfate

• Phosphate

• Nitrate

• Carbonate

Which type of metal is zinc classified as?

• Alkali metal

• Alkaline earth metal

• Transition metal

• Noble gas

What is the name of the compound Zn3(PO4)2?

• Zinc carbonate

• Zinc sulfate

• Zinc phosphate

• Zinc nitrate

Why is it unnecessary to specify the charge of zinc in Zn3(PO4)2?

• Zinc is always 2+

• Zinc is always 1+

• Zinc is always 4+

• Zinc is always 3+

What is the charge of the phosphate ion?

• 4-

• 3-

• 2-

• 1-

How many zinc atoms are needed to balance the charge with two phosphate ions?

• Three

• Four

• Two

• One

What is the total positive charge contributed by three zinc atoms?

• 8+

• 2+

• 4+

• 6+

What is the net charge of the compound Zn3(PO4)2?

• 1+

• 0

• 2-

• 1-

What is the correct chemical formula for zinc phosphate?

• Zn3(PO4)2

• Zn4(PO4)3

• Zn2(PO4)3

• Zn(PO4)2