Dichromate and Zinc Compounds

The video tutorial explains how to write the formula for zinc dichromate. It begins by identifying zinc as a metal with a 2+ charge and dichromate as a polyatomic ion with a 2- charge. The tutorial emphasizes the importance of balancing these charges to achieve a net charge of zero, resulting in the correct formula for zinc dichromate. The video concludes with a confirmation of the formula and a thank you from Dr. B.

What is the element symbol for zinc?

• Z

• Zn

• Zc

• Zk

Which of the following is a polyatomic ion?

• Zinc

• Dichromate

• Oxygen

• Helium

What is the chemical formula for the dichromate ion?

• CrO4

• Cr2O7

• CrO3

• Cr2O4

What is the ionic charge of the dichromate ion?

• 2-

• 1+

• 1-

• 2+

What is the ionic charge of zinc in zinc dichromate?

• 0

• 3+

• 2+

• 1+

What is the net charge of the zinc dichromate compound?

• 1+

• 3+

• 0

• 2-