PPT Slide
Two Lewis structures for H 2SO4 with formal charges, are:
The two S - O bonds with H atoms attached to O are 157 pm long whereas the two S=O bonds are 142 pm long.
- Sometimes the central atom exhibits an expanded octet while still bonding to four or fewer atoms. sulfuric acid, H 2SO4 :
- In structure B, S has an expanded valence shell of 12 electrons. Structures A and B are both valid resonance forms.
- B is a more significant contributor to the resonance hybrid because it has lower formal charges.
- Structure B is also consistent with observed bond lengths.
Notes: