Balancing Charges in PbS Compounds

The video tutorial explains how to name the compound PbS, lead sulfide. It begins by identifying Pb as lead, a transition metal, and S as sulfur, a non-metal. The tutorial then describes how to replace the ending of sulfur with 'ide' to form sulfide. It emphasizes the importance of considering the charge of the transition metal, noting that sulfur forms a sulfide ion with a charge of two minus, requiring lead to have a charge of two plus. The final name is 'lead(II) sulfide'. The video also covers how to deduce the formula from the name, ensuring the net charge is zero.

What type of metal is lead in the compound PbS?

• Alkali metal

• Transition metal

• Alkaline earth metal

• Noble gas

When naming a compound, what suffix is added to the non-metal?

• ous

• ide

• ate

• ite

What is the charge of the sulfide ion in PbS?

• 2+

• 1+

• 2-

• 1-

Why is a Roman numeral used in the name of PbS?

• To show the charge of the transition metal

• To indicate the number of atoms

• To specify the type of bond

• To denote the compound's state

What is the correct name for PbS?

• Lead sulfur

• Lead(IV) sulfide

• Lead(II) sulfide

• Lead sulfide

If given the name Lead(II) Sulfide, what would be the charge of lead?

• 1+

• 2+

• 3+

• 4+

How many lead and sulfur atoms are needed to balance the charges in PbS?

• Two lead and one sulfur

• One lead and two sulfur

• One lead and one sulfur

• Two lead and two sulfur