Resonance Structures for a Certain Molecule

[alingy1]

Here attached is a question from my exam. My TA removed 1 point out of 7 for a reason. Can anyone decipher for what? There's the writing in red but it is illegible to me. I don't understand to what he refers by 8 and 6 t or +, or whatever he wrote.

http://imgur.com/igpyp8V

Or can anyone write a full answer?

 

[Greg Bernhardt]

I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?

 

[happysmiles36]

My guess on what he wrote is "bad all have fc (formal charge)". I hate it when the markers writing is illegible.

 

[epenguin]

My reading is "but all have 8t". I don't know what t is but he has written 6t on some structures and 8t on others.

 

[DeeNos]

As a scientist, it is important to always provide clear and accurate explanations for any data or information presented. In regards to the resonance structures for a certain molecule, it appears that there may be some confusion or misunderstanding regarding the notation used by the TA.

Based on the image provided, it appears that the TA removed 1 point out of 7 for unclear notation or labeling. The writing in red is difficult to decipher, but it seems to suggest that there is an issue with the use of 8 and 6 in the notation or possibly the use of a plus sign. It is unclear what the TA is specifically referring to, but it is important to clarify any notation or labeling in order to accurately represent the data and ensure a clear understanding for others.

In order to provide a complete answer, it would be helpful to have more information about the specific molecule and the resonance structures being discussed. However, in general, when representing resonance structures, it is important to clearly label any charges, bond orders, or electron movements. This can be done using symbols such as arrows or using different colors or fonts to differentiate between different structures.

In conclusion, it is important to carefully review and clarify any notation or labeling used in scientific work to ensure clear communication and accurate representation of data. If there is any confusion or uncertainty, it is always best to seek clarification from the TA or instructor to ensure the best possible understanding and accuracy.