Ionic Charges and Compounds

The video tutorial explains how to write the chemical formula for zinc perchlorate. It begins by identifying zinc and perchlorate, noting that perchlorate is a polyatomic ion with a one-minus charge. Zinc, a transition metal, typically has a two-plus charge. The tutorial demonstrates how to balance these charges to achieve a neutral compound, resulting in the formula Zn(ClO4)2. Dr. B concludes the lesson with a thank you.

What is the element symbol for zinc?

• Zn2

• Zn

• Z

• Zc

Which of the following is a polyatomic ion?

• Oxygen

• Zinc

• Perchlorate

• Chlorine

What is the ionic charge of the perchlorate ion?

• 1+

• 2+

• 2-

• 1-

What is the typical ionic charge of zinc in compounds?

• 0

• 3+

• 2+

• 1+

How many perchlorate ions are needed to balance the charge of one zinc ion?

• One

• Two

• Four

• Three

What is the correct formula for zinc perchlorate?

• ZnClO4

• Zn(ClO4)2

• Zn2(ClO4)

• Zn2ClO4