Lithium and Cyanide Compounds

The video tutorial explains how to write the formula for lithium cyanide. It begins by identifying the element symbol for lithium and the cyanide ion, which is a polyatomic ion with a charge of one minus. The tutorial emphasizes the importance of balancing the charges to achieve a net charge of zero. Lithium, being in group one, has a charge of one plus, which balances with the cyanide ion's one minus charge. The final formula for lithium cyanide is LiCN.

What is the element symbol for lithium?

• Li

• L

• Lt

• Lm

Which of the following is a polyatomic ion?

• Hydrogen

• Cyanide

• Lithium

• Oxygen

What is the charge of a lithium ion?

• 2-

• 2+

• 1+

• 1-

What is the charge of the cyanide ion?

• 2+

• 1+

• 1-

• 2-

What is the correct formula for lithium cyanide?

• LiCN

• LiI

• LiC

• LiNC