Aluminum and Cyanide Ions Concepts

The video tutorial explains how to write the formula for aluminum cyanide. It begins by identifying aluminum and cyanide, noting that cyanide is a polyatomic ion with a charge of one minus. The tutorial discusses the ionic charges of aluminum and cyanide, emphasizing the need for the compound to be neutral. By balancing the charges, the formula for aluminum cyanide is determined to be Al(CN)3, with three cyanide ions balancing the charge of one aluminum ion.

What is the symbol for aluminum?

• Ag

• Au

• Am

• Al

Which of the following best describes the cyanide ion?

• A noble gas

• A metal

• A polyatomic ion

• A single element

What is the ionic charge of the cyanide ion?

• 1+

• 3+

• 1-

• 2-

In which group is aluminum found on the periodic table?

• Group 18

• Group 1

• Group 13

• Group 17

Why must the charges in aluminum cyanide add up to zero?

• To ensure it is a compound

• To achieve neutrality

• To make it a metal

• To make it a gas

How many cyanide ions are needed to balance the charge of one aluminum ion?

• Two

• Four

• One

• Three

What is the correct formula for aluminum cyanide?

• AlCN3

• Al3CN

• AlC3N

• AlCN