From step step 2 arrange atoms in reasonable

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Unformatted text preview: tures Step Step 1: Calculate total valence electrons from all atoms. from Step Step 2: Arrange atoms in reasonable positions. Connect atoms by single lines; each line equals one pair (2e) of bonding electrons. Step 3: Distribute electrons to satisfy octets of atoms to bonded to the central atom Step 4: a) Place any leftover electrons on the central atom b) Try multiple bonds, if there are no enough multiple electrons to give the central atom an octet Lewis Structures 4-step procedure for structure of CO2 CO Step 1: calculate the total valence electrons from all atoms. from C: C: 4 e × 1 = 4 e O: 6 e × 2 = 12 e Total valence electrons = 4 + 12 = 16 e 16 Step 2: arrange atoms in reasonable positions for bonding. (Connect atoms by single lines; each line equals one pair (2e) of bonding electrons. ) O C O Drawing Lewis Structures Step 3: Distribute electrons to satisfy octets of atoms bonded bonded to the central atom. OC O O’s are surrounded by 8e → octet. C is surrounded by 4e only → need 4 more! Drawing Lewis Structures Step 4: a) Place any leftover electrons on the central atom b) Try multiple bonds, if there are no enough multiple electrons to give the central atom an octet OC O Move two pairs into two bonding positions OC O All atoms are surrounded by 8e → octet! Drawing Lewis Structures But… But… Another Le...
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