Problem: Draw the Lewis structure for each compound.H3AsO4

FREE Expert Solution

Step 1: Arsenic (EN = 2.18) is less electronegative than oxygen (EN = 3.44) and hydrogen only forms 1 bond hence arsenic is the central atom.


Step 2: The total number of valence electrons present in H3AsO4

 is:


            Group             Valence Electrons

As       5A                   1 × 5 e5 e

H         1A                   3 × 1 e3 e

O         6A                   4 × 6 e24 e

Total:  32 valence e


Step 3: As will go in the center while H and O are terminal atoms. 


The complete Lewis structure is:

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Problem Details

Draw the Lewis structure for each compound.

H3AsO4

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