Problem: Draw the structure of periodic acid, HIO4. Optimize formal charges. 

FREE Expert Solution

Step 1: Determine the central atom in this molecule.

Iodine (EN = 2.5) is less electronegative than oxygen (EN = 3.5) and H can only make 1 bond, so iodine is the central atom.


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

            Group             Valence Electrons
H         1A                   1 × 1 e = 1 e
Cl        7A                   1 × 7 e = 7 e
O         6A                   4 × 6 e = 24 e
                                              Total:  32 valence e


Step 3: Draw the Lewis structure for the molecule.

The incomplete Lewis structure is:

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Problem Details

Draw the structure of periodic acid, HIO4. Optimize formal charges. 


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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lewis Dot Structure: Formal Charge concept. If you need more Lewis Dot Structure: Formal Charge practice, you can also practice Lewis Dot Structure: Formal Charge practice problems.

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