Question

The oxalate ion, \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-},\) has the skeleton structure O=CC(O)C(=O)O (a) Complete the Lewis structure of this ion. (b) Draw three possible resonance forms for \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\), equivalent to the Lewis structure drawn in (a). (c) Is CCOC(=O)OCC

Short answer

#tag_content# If the other structure being referred to is the one provided in the prompt: O=CC(O)C(=O)O It can be observed that this structure is essentially the same as our initial skeleton structure, just written in a different format. As such, it is correct as it represents a valid resonance form for the oxalate ion.

Step-by-step solution

Identify the given skeleton structure

The given skeleton structure of the oxalate ion is as follows: O=CC(O)C(=O)O To better understand the problem, we should convert the skeleton structure in the following form: $$