How to Determine Bonding in Lewis Structures for Oxoacids

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When drawing Lewis structures, determining which atoms bond to each other relies on understanding molecular structure and bonding principles. In the case of H2SO4, hydrogen typically bonds to oxygen rather than sulfur. This is a common characteristic of oxoacids, where hydrogen is predominantly attached to oxygen atoms. Knowledge of common bonding patterns and the valence of atoms aids in accurately predicting these connections.
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When drawing a Lewis structure for a compound how do you know what bonds to what? For example, with H2SO4, how does one know whether the H bond to O or to S?
 
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A little bit of guessing and a little bit of knowing. Hydrogen in oxoacids is (almost) always attached to oxygen.
 
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