Ionic Compounds and Polyatomic Ions

This video tutorial explains how to write the formula for Tin(IV) Phosphate. It begins by identifying the element symbol for tin and its charge as a transition metal. The video then discusses the phosphate ion, its charge, and the concept of polyatomic ions. Using the crisscross method, the tutorial demonstrates how to balance the charges between tin and phosphate ions to form an ionic compound. Finally, the video verifies the formula to ensure a net charge of zero, concluding with the correct formula for Tin(IV) Phosphate.

What is the element symbol for tin?

• Pb

• Sn

• Ti

• Sb

What charge does tin have in tin(IV) phosphate?

• 2+

• 3+

• 4+

• 5+

What is the charge of the phosphate ion?

• 1-

• 4-

• 2-

• 3-

Which of the following is a polyatomic ion?

• O2

• Na+

• Cl-

• PO4^3-

What method is used to balance the charges in ionic compounds?

• Elimination

• Substitution

• Crisscross method

• Cross-multiplication

Why do we use parentheses around the phosphate in the formula?

• To highlight its charge

• To separate it from tin

• To show it's a metal

• To indicate multiple ions

What is the net charge of the compound tin(IV) phosphate?

• 3+

• 2-

• 1+

• 0

What is the correct formula for tin(IV) phosphate?

• Sn(PO4)2

• Sn2(PO4)3

• Sn4(PO4)3

• Sn3(PO4)4