Naming and Writing Chemical Formulas for Polyatomic Ions

This video tutorial by Mr. Millings covers how to name and write chemical formulas for compounds containing polyatomic ions. It begins with an introduction to polyatomic ions and emphasizes the importance of memorizing common ions. The video then explains the rules for naming compounds with polyatomic ions, similar to naming binary ionic compounds. It provides detailed examples of naming and writing chemical formulas, including the use of Roman numerals for transition metals. The tutorial concludes with practice problems for viewers to test their understanding.

Which of the following is the correct formula for ammonium?

• SO4^2-

• NO2-

• NO3-

• NH4+

What is the name of the polyatomic ion with the formula NO3-?

• Nitrite

• Nitrate

• Sulfate

• Phosphate

When naming a compound containing a polyatomic ion and a type 1 metal, what is the correct naming convention?

• Add 'ide' to the end of the polyatomic ion

• Name the metal followed by the polyatomic ion

• Name the polyatomic ion followed by the metal

• Use Roman numerals for the metal

What is the correct name for the compound with the formula Ca(ClO3)2?

• Calcium Chloride

• Calcium Chlorate

• Calcium Chlorite

• Calcium Perchlorate

How do you determine the charge of a transition metal in a compound containing a polyatomic ion?

• By the subscript of the polyatomic ion

• By looking at the periodic table

• By the position of the metal in the compound

• By the charge of the polyatomic ion and balancing the overall charge

What is the correct chemical formula for iron(III) sulfate?

• FeSO4

• Fe3(SO4)2

• Fe2(SO4)3

• Fe(SO4)2

When writing the chemical formula for a compound containing a polyatomic ion, what must you do if you need to add a subscript to the polyatomic ion?

• Add the subscript directly to the polyatomic ion

• Add parentheses around the polyatomic ion first, then add the subscript

• Add the subscript to the entire compound

• Add the subscript to the metal

What is the correct chemical formula for ammonium sulfate?

• NH4SO4

• (NH4)2SO4

• (NH4)2(SO4)3

• NH4(SO4)2

What is the name of the compound with the formula NaNO3?

• Sodium Nitrite

• Sodium Nitrate

• Sodium Sulfate

• Sodium Phosphate

What is the correct name for the compound with the formula Pb(C2H3O2)2?

• Lead(II) Nitrate

• Lead(IV) Nitrate

• Lead(II) Acetate

• Lead(IV) Acetate