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Drawing Lewis Structures

Drawing Lewis Structures. Step 1: Identify central atom (lowest electron affinity, usually C,N,P,S) Step 2: Calculate total number of valence electrons (write out electronic configurations) Step 3: Draw single bonds between central atom and peripheral atoms, 2e - each

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Drawing Lewis Structures

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  1. Drawing Lewis Structures • Step 1: Identify central atom (lowest electron affinity, usually C,N,P,S) • Step 2: Calculate total number of valence electrons (write out electronic configurations) • Step 3: Draw single bonds between central atom and peripheral atoms, 2e-each • Step 4: Assign electrons to peripheral atoms so they have a full octet (except H) • Step 5: Assign remaining electrons to central atom • Step 6: If central atom is short of a full octet move a lone pair from a peripheral atom to form a double bond.

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