Chromium and Fluoride Compounds

This video tutorial explains how to write the formula for chromium(II) fluoride. It begins by identifying the element symbols for chromium and fluoride, then discusses the ionic charges of these elements. The tutorial explains how to balance these charges to form a neutral compound, resulting in the formula CrF2. The video concludes with a summary of the steps taken to derive the formula.

What is the element symbol for chromium?

• Cm

• Co

• Cr

• Ch

Which group on the periodic table does fluorine belong to?

• Group 7A

• Group 1

• Group 14

• Group 18

What is the charge of a fluorine ion?

• 2+

• 2-

• 1+

• 1-

How do you balance the charges to form a neutral compound for Chromium 2 Fluoride?

• Add more chromium ions

• Add more fluorine ions

• Change the subscript of fluorine

• Change the subscript of chromium

What is the final formula for Chromium 2 Fluoride?

• CrF

• CrF2

• Cr2F

• Cr2F3

Why is it important for the charges in Chromium 2 Fluoride to add up to zero?

• To make it an ion

• To make it a neutral compound

• To make it a liquid

• To make it a gas