Lewis Structures Questions

The covalent bond—the sharing of two electrons in the valence shell of both atoms – can be represented with a simple model, the Lewis model to determine the structure of a molecule. The motivation for the Lewis model is based on two premises: • valence electrons are responsible for forming chemical bonds • full shells are energetically favorable, so formation of compounds is driven by forming full shells. To capture these two ideas, Lewis designed a way to make a visualize how molecular structures form based on the two premises. Here is a simple example of a covalent bond for the formation of HF and H2O

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