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General Chemistry

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Moderate

Lewis Strutures: Resonance and Formal Charge

CHEM-NCKV7L

Assign formal charges to the $O$ atoms in the peroxide anion and in molecular oxygen.

Also, indicate whether or not the two structures below are resonance structures of each other.

Created for Albert.io. Copyright 2016. All rights reserved.

A

The formal charge of $O$ in ${ O }_{ 2 }^{ 2- }$ is -1 while the formal charge in ${ O }_{ 2 }$ is 0. These two sketches are resonance structures of each other.

B

The formal charge of $O$ in ${ O }_{ 2 }^{ 2- }$ is -2 while the formal charge in ${ O }_{ 2 }$ is 0. These two sketches are not resonance structures of each other.

C

The formal charge of $O$ in ${ O }_{ 2 }^{ 2- }$ is -1 while the formal charge in ${ O }_{ 2 }$ is 0. These two sketches are not resonance structures of each other.

D

The formal charge of $O$ in molecular oxygen is -1 while the formal charge of $O$ in the peroxide anion is 0. These two sketches are not resonance structures of each other.