Lead(II) Hydroxide and Ionic Compounds

The video tutorial explains how to write the formula for lead(II) hydroxide by using the periodic table and understanding ionic charges. It introduces the crisscross method to balance the charges of lead and hydroxide ions, ensuring a net charge of zero. The tutorial concludes by verifying the formula and summarizing the process.

What is the chemical symbol for lead?

• Pd

• Ld

• Le

• Pb

What is the charge of the hydroxide ion?

• 1+

• 1-

• 2+

• 2-

Why must the charges in an ionic compound add up to zero?

• To make it reactive

• To achieve a neutral compound

• To balance the equation

• To ensure stability

What is the charge of lead in lead(II) hydroxide?

• 2-

• 1+

• 1-

• 2+

What method is used to balance the charges in lead(II) hydroxide?

• Substitution method

• Crisscross method

• Cross-multiplication

• Balancing method

Why do we use parentheses around the hydroxide ion in the formula?

• Because it is a polyatomic ion

• To indicate its charge

• To separate it from lead

• Because it is a single ion

How many hydroxide ions are needed to balance the charge of lead in lead(II) hydroxide?

• Three

• Four

• Two

• One

What is the final formula for lead(II) hydroxide?

• Pb(OH)2

• Pb2OH

• PbO2H

• PbOH