Problem: The Lewis structure of the CO32- ion is __________.

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We are being asked to identify the correct structure for CO32-. We have to follow the steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.          

Step 3: Draw the Lewis Structure for the molecule

Step 4: Calculate for formal charges


Step 1: Determine the central atom in this molecule.

C → less electronegative atom than O → central atom


Step 2: Calculate the total number of valence electrons present.          

CO32-:

           Group              Valence Electrons

C         4A                   1 x 4 e‑  = 4 e‑ 
O         6A                   3 x 6 e- = 18 e‑ 
-2 charge                                 2 e‑ 
                                    Total = 24 valence e- 


Step 3: Draw the Lewis Structure for the molecule

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Problem Details

The Lewis structure of the CO32- ion is __________.

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Based on our data, we think this problem is relevant for Professor Thyagarajan's class at JHU.