Understanding Vanadium Compounds and Charges

This video tutorial explains how to write the chemical formula for vanadium 5 sulfide. It begins by identifying the element symbols for vanadium and sulfide, then discusses the charges of these elements and the importance of achieving a net charge of zero. The crisscross method is used to derive the formula V2S5, and the video concludes with a verification of the formula and an explanation of how to name the compound.

What is the element symbol for vanadium?

• Vd

• Vm

• Va

• V

What does the Roman numeral in vanadium 5 sulfide indicate?

• The number of vanadium atoms

• The charge of vanadium

• The number of sulfur atoms

• The charge of sulfur

What is the charge of the sulfide ion?

• 1-

• 2-

• 3-

• 4-

Why do the charges in a compound need to add up to zero?

• To make the compound reactive

• To make the compound stable

• To make the compound visible

• To make the compound colorful

What is the purpose of the crisscross method?

• To calculate the density

• To balance the charges

• To find the atomic mass

• To determine the color

What is the formula for vanadium 5 sulfide?

• V2S5

• V2S3

• VS

• VS2

How do you verify the formula V2S5?

• By checking the charges

• By checking the volume

• By checking the mass

• By checking the color

What is the charge of vanadium in V2S5?

• 5+

• 4+

• 6+

• 3+

Why is a Roman numeral used in the name of vanadium 5 sulfide?

• To indicate the charge of vanadium

• To indicate the state of matter

• To indicate the color

• To indicate the number of atoms