Formal Charge and Valence Electrons in NBr2-

This video tutorial explains how to draw the Lewis structure for the NBr2- ion. It begins by counting the valence electrons, placing the least electronegative element, nitrogen, in the center, and arranging bromine atoms on either side. The tutorial guides through forming single bonds and completing the octets for each atom. It concludes with an analysis of the formal charges, highlighting that the nitrogen atom carries a -1 charge, and provides a link for further exploration of molecular geometry and bond angles.

How many valence electrons are there in total for the NBr2- ion?

• 20

• 18

• 22

• 24

Which element is placed at the center of the NBr2- Lewis structure?

• Bromine

• Nitrogen

• Oxygen

• Hydrogen

What type of bond is formed between the nitrogen and bromine atoms in NBr2-?

• Ionic bond

• Single bond

• Triple bond

• Double bond

How many valence electrons are used to complete the octets of the bromine atoms?

• 16

• 8

• 12

• 20

What should be added around the Lewis structure of NBr2- to indicate it is an ion?

• Quotation marks

• Parentheses

• Curly braces

• Brackets

What is the formal charge on the nitrogen atom in the NBr2- ion?

• 0

• -1

• +1

• -2

What is the formal charge on each bromine atom in the NBr2- ion?

• +1

• 0

• -1

• -2

Where can you find additional help with molecular geometry and bond angles related to NBr2-?

• In the video thumbnail

• In the video title

• In the video comments

• In the video description