Lead(II) Iodide and Ionic Compounds

The video tutorial explains how to write the chemical formula for lead(II) iodide. It begins by identifying the elements involved, lead and iodine, and their respective charges using the periodic table. The tutorial then demonstrates how to balance these charges to form an ionic compound, resulting in the formula PbI2. The process is verified by checking the net charge, ensuring it sums to zero. The video concludes with a summary of the steps taken to derive the correct formula.

What is the symbol for lead on the periodic table?

• Pb

• Le

• Pd

• Ld

Which type of compound is formed between lead and iodine?

• Covalent

• Ionic

• Molecular

• Metallic

What is the ionic charge of lead in lead(II) iodide?

• 1+

• 3+

• 4+

• 2+

How many iodine atoms are needed to balance the charge of one lead atom in lead(II) iodide?

• Three

• Two

• One

• Four

What is the charge of an iodine ion?

• 1-

• 2-

• 2+

• 1+

What is the net charge of the lead(II) iodide compound?

• 1+

• 0

• 2-

• 3+

What is the correct chemical formula for lead(II) iodide?

• PbI2

• Pb2I

• PbI

• Pb2I2

Why don't we write the subscript '1' in chemical formulas?

• It's unnecessary

• It's implied

• It's too small

• It's incorrect

Who is the presenter of the video?

• Dr. D

• Dr. B

• Dr. C

• Dr. A