Chemical Formulas and Ionic Compounds

The video tutorial explains how to write the formula for lead(IV) chloride using the periodic table. It discusses the charges of lead and chlorine, emphasizing the need for a neutral compound. The crisscross method is introduced to determine the subscripts for the compound. The tutorial concludes by verifying the formula and ensuring the net charge is zero, resulting in the correct formula PbCl4.

Which element is represented by the symbol 'Pb'?

• Chlorine

• Phosphorus

• Lead

• Tin

What type of compound is formed between lead and chlorine?

• Molecular

• Metallic

• Ionic

• Covalent

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

• 1+

• 2+

• 3+

• 4+

What is the charge of chlorine in lead(IV) chloride?

• 1-

• 4-

• 2-

• 3-

What method is used to determine the subscripts in the formula for lead(IV) chloride?

• Addition Method

• Substitution Method

• Crisscross Method

• Balancing Method

In the crisscross method, what happens to the charges of the ions?

• They are swapped and used as subscripts

• They are multiplied

• They are ignored

• They are added together

How many chlorine atoms are present in the formula for lead(IV) chloride?

• 4

• 3

• 2

• 1

What is the net charge of lead(IV) chloride?

• 1-

• 0

• 4+

• 4-

What is the final chemical formula for lead(IV) chloride?

• PbCl

• PbCl2

• PbCl3

• PbCl4