Chromium III Fluoride Concepts

This video tutorial explains how to write the chemical formula for chromium 3 fluoride. It begins by identifying the element symbols for chromium and fluoride, then discusses the ionic charges associated with each. The tutorial explains how to balance these charges to achieve a neutral compound, resulting in the formula CrF3. The video concludes with a summary and thanks from Dr. B.

What is the element symbol for chromium?

• Cr

• Ch

• Cm

• Co

Which group does fluorine belong to on the periodic table?

• Group 1

• Group 7A

• Group 5

• Group 3

What is the ionic charge of chromium in Chromium III Fluoride?

• 2+

• 1+

• 4+

• 3+

Why must the charges in Chromium III Fluoride add up to zero?

• To change its state

• To ensure it is a neutral compound

• To make it a stable compound

• To make it reactive

How many fluoride ions are needed to balance the charge of one chromium ion in Chromium III Fluoride?

• 1

• 2

• 3

• 4

What is the final formula for Chromium III Fluoride?

• Cr3F

• CrF

• CrF2

• CrF3