Many common acids are 'oxyacids', i.e. the 'acidic' hydrogen is covalently bound to an oxygen atom. Key Questions: 7.1) Besides HClO4, there are five other strong acids you should know. What are they? Exercises: 7.1) With Model 7 in mind, draw the Lewis structures for the oxyacids below. For each, give the TOTAL ELECTRON COUNT and SHOW ALL lone pair and all NON-ZERO formal charge! a) sulfuric acid, H2SO4 c) acetic acid, CH3COH b) nitric acid, HNO3