Chemical Bonding: O₂^2- Lewis Structure

Drawing the Lewis Structure for O₂^2-

Viewing Notes:

• With O₂^2- be sure to add two additional valence electrons to your total because of the negative two in the chemical formula.
• There are a total of 14 valence electrons in O₂^2-.
• Be sure to put brackets and a negative two (2-) around the O₂^2- Lewis structure to show that it is an ion.

Transcript: This is the O2 2- Lewis structure. For the peroxide ion, Oxygen has six valence electrons. We have two Oxygens, and then we need to take in account these extra two valence electrons up here, so we'll just add them for a total of 14 valence electrons for the 02 2- Lewis structure. We'll put two Oxygen atoms next to each other right here and we'll put two electrons to make a chemical bond, so we've used two. And then we'll fill the octets, 4, 6 ... and 14.

So we've used all the valence electrons in the O2 2- Lewis structure. This Oxygen right here has 8 valence electrons, it has an octet. This Oxygen right here has 8 valence electrons as well, so it also has an octet. To show that O2 2- is an ion we'll put brackets around it and put in -2 on the top. And there you have it: the Lewis structure for O2 2-, the peroxide ion.

This is Dr. B.; thanks for watching.