Ionic Compounds and Polyatomic Ions

The video tutorial explains how to write the formula for tin(IV) sulfate. It begins by identifying the element symbol for tin (Sn) and its charge from the Roman numeral IV, indicating a 4+ charge. The sulfate ion, a polyatomic ion with a 2- charge, is introduced. The tutorial emphasizes the need for the charges to balance to form an ionic compound, resulting in the formula Sn(SO4)2. The video concludes with a recap of the formula and its components.

What is the element symbol for tin, and what charge does it have in tin(IV) sulfate?

• Sn with a charge of 2+

• Ti with a charge of 2+

• Ti with a charge of 4+

• Sn with a charge of 4+

Which of the following is a polyatomic ion that is not found on the periodic table?

• SO4 with a 2- charge

• Cl with a 1- charge

• Na with a 1+ charge

• O2 with a 2- charge

Why is it recommended to memorize the sulfate ion?

• It is rarely used in chemistry.

• It has a variable charge.

• It is a common polyatomic ion.

• It is found on the periodic table.

What is the net charge required for an ionic compound?

• 0

• 1+

• 2-

• 4+

How many sulfate ions are needed to balance the charge of one tin(IV) ion?

• Two sulfate ions

• One sulfate ion

• Four sulfate ions

• Three sulfate ions

What is the final formula for tin(IV) sulfate?

• Sn(SO3)2

• Sn2(SO4)3

• Sn(SO4)2

• SnSO4