Exploring Polyatomic Ions in Bonding

This video tutorial covers the basics of ionic compounds, focusing on binary ionic compounds and polyatomic ions. It explains how to name these compounds, including the use of Roman numerals for multivalent metals. The tutorial also introduces polyatomic ions, detailing their naming conventions and how to write chemical formulas involving them. Through examples and practice problems, viewers learn to identify and name ionic compounds, understand the role of multivalent metals, and write formulas for compounds with polyatomic ions.

What does the term 'polyatomic' mean in the context of ions?

• An ion with a negative charge

• An ion with a single atom

• An ion with many atoms

• An ion with a positive charge

When naming an ionic compound, which part of the compound is named first?

• The element with the higher atomic number

• The non-metal

• The metal

• The polyatomic ion

What is the correct name for PbCl2?

• Lead chloride

• Lead dichloride

• Lead(IV) chloride

• Lead(II) chloride

How can you identify a polyatomic ion in a chemical formula?

• It always ends in 'ide'

• It contains more than two different elements

• It is always written first

• It has a positive charge

Which of the following endings indicates a polyatomic ion?

• 'ium'

• 'ate' or 'ite'

• 'gen'

• 'ide'

What is the correct name for KNO2?

• Potassium nitrite

• Potassium nitrogen oxide

• Potassium nitrate

• Potassium dinitrogen

How do you write the formula for a compound with calcium and carbonate ions?

• Ca(CO3)2

• CaCO3

• Ca(CO3)3

• Ca2CO3

What is the correct formula for aluminum sulfite?

• Al3(SO3)2

• Al(SO3)2

• Al2SO3

• Al2(SO3)3

Which of the following is a multivalent metal?

• Sodium

• Potassium

• Calcium

• Iron

What is the correct name for FeCl3?

• Iron(II) chloride

• Iron trichloride

• Iron(III) chloride

• Iron chloride