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Practice Problem

The structures shown below represent molecules having the molecular formula HCNO. However, these are incomplete structures. The non-bonding valence shell electrons on the 2nd-row atoms are missing and formal charges are not shown. Complete these aspects of the formulas by drawing them on your sheet of paper. When you have finished, Click Here to see Lewis / Kekulé formulas having all the valence shell electrons.


Nine incomplete skeletal structures of HCNO isomers (lacking lone pairs and formal charges) to be completed as Lewis formulas


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