Lead Compounds and Chemical Charges

The video tutorial explains how to write the chemical formula for lead(IV) sulfide. It begins by identifying lead and sulfur on the periodic table, noting their charges. Lead has a +4 charge, while sulfur has a -2 charge. To balance the charges and achieve a net charge of zero, the formula requires two sulfur atoms for every lead atom, resulting in PbS2. The tutorial concludes by verifying the balanced formula.

Which element is represented by the symbol 'Pb' on the periodic table?

• Boron

• Phosphorus

• Sulfur

• Lead

What is the charge of lead in lead(IV) sulfide?

• -4

• -2

• +4

• +2

Why is it necessary to balance the charges when writing the formula for a compound?

• To ensure the compound is stable

• To make the compound dissolve in water

• To increase the compound's weight

• To make the compound colorful

How many sulfur atoms are needed to balance the charge of one lead atom in lead(IV) sulfide?

• 3

• 1

• 2

• 4

What is the net charge of the compound lead(IV) sulfide?

• -4

• +2

• 0

• +4

What is the correct chemical formula for lead(IV) sulfide?

• PbS2

• Pb2S

• Pb2S2

• PbS

Who is the narrator of the video tutorial?

• Dr. B

• Dr. D

• Dr. A

• Dr. C