Are These Two Structures Resonance Forms?

[Grapz]

Homework Statement

Are these two structures resonance?

if not why not?

Homework Equations

The Attempt at a Solution

I drew these resonance forms myself, but the answer book didnt' have this resonance structure in its answer and i wanted to know if this indeed is a resonance form.

I ask because one has total charge of -2 and other one is neutral

 

[chemisttree]

No, they aren't resonance structures. The reason is:

one has total charge of -2 and other one is neutral

Resonance forms don't result in a net change of charge. That's a redox effect...