How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! :)

How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂

How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂

How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂

A Lewis structure shows only VALENCE electrons.  The first step to drawing a Lewis structure is to figure out how many valence electrons each element in the compound has.  Once you have figured out valence electrons for each element, add the numbers together to get the total valence electrons for the compound.  The correct structure will have the exact same number of electrons as the total number of valence electrons.Once you know how many electrons you need, you can start arranging the atoms.  The central atom is the element with the lowest electronegativity.  If carbon is present it is the central atom.  Hydrogen and halogen atoms are usually at the end(s) of the molecule.Now that you have the skeleton, position electrons around the atoms so that they satisfy the octet rule.  Most atoms will have 8 electrons and hydrogen will have 2.  A dot represents a single electron and a dash represents two electrons.  A single dash is a single bond, two dashes is a double bond, and three dashes is a triple bond.  Always start with single bond and if you have used too many electrons, go back and change single bonds to double/triple bonds where necessary.Double check your structure.  Make sure that the total number of electrons you added equals the total number of valence electrons you are supposed to have.
How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂
How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂
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How do you draw Lewis Structures?If anybody knows of a good website to learn about Lewis structures that would be great! 🙂
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