Ionic Compounds and Charges

The video tutorial explains how to write the formula for nickel 2 bromide. It begins by identifying the element symbols for nickel and bromine, then discusses the ionic nature of the compound. The tutorial introduces the crisscross method to balance the charges and derive the correct formula. Finally, it verifies the formula by ensuring the net charge is zero, concluding with a summary of the process.

What is the chemical symbol for nickel?

• Ni

• Nl

• Nk

• Nc

Which group on the periodic table does bromine belong to?

• Group 7A

• Group 1

• Group 18

• Group 14

What is the ionic charge of nickel in Nickel(II) Bromide?

• 1+

• 0

• 3+

• 2+

What is the charge of bromine in an ionic compound?

• 1-

• 0

• 2-

• 3-

What method is used to balance the charges in Nickel(II) Bromide?

• Cross-multiplication

• Addition method

• Crisscross method

• Substitution method

Why do we not write the number '1' in the formula for Nickel(II) Bromide?

• It's redundant

• It's incorrect

• It's unnecessary

• It's implied

What is the net charge of a correctly balanced Nickel(II) Bromide compound?

• 2+

• 1-

• 1+

• 0