Copper Iodide Ionic Charges and Properties

The video tutorial explains how to write the formula for copper(II) iodide. It begins by identifying the element symbols for copper and iodine, then discusses the ionic charges of these elements. Copper, a transition metal, has a charge of +2, while iodine, a halogen, has a charge of -1. The tutorial demonstrates how to balance these charges to form a neutral compound using the crisscross method, resulting in the formula CuI2. The video concludes by verifying the formula to ensure the charges balance to zero.

What is the symbol for copper in the periodic table?

• Cu

• Co

• C

• Ca

Which group does iodine belong to on the periodic table?

• Group 2

• Group 7A

• Group 1

• Group 8A

What is the ionic charge of copper in copper two iodide?

• +2

• -1

• +1

• -2

What is the ionic charge of iodine in copper two iodide?

• -2

• -1

• +2

• +1

What method is used to balance the charges in copper two iodide?

• Substitution

• Addition

• Cross-multiplication

• Crisscross method

What is the formula for copper two iodide?

• CuI

• Cu2I2

• CuI2

• Cu2I

How do the charges in copper two iodide balance out?

• +2 and -1

• +2 and -2

• +1 and -1

• +1 and -2

What is the net charge of copper two iodide?

• +1

• 0

• +2

• -1