writing lewis structure. steps 1.count the total number of valence electrons a.add one for each...
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3.Complete an octet for all atoms remaining a.Exceptions: H, Al, B, Be 4.If there are not enough electrons, form double and triple bonds on the central atom as needed
TRANSCRIPT
Writing Lewis Structure
Steps
1. Count the total number of valence electronsa. Add one for each negative chargeb. Subtract one for each positive charge
2. Write the skeletal structurea. Element with the least # of atoms or least
electronegative goes in the centerb. Connect bonded atoms with single bonds first
3. Complete an octet for all atoms remaininga. Exceptions: H, Al, B, Be
4. If there are not enough electrons, form double and triple bonds on the central atom as needed
Example 1: CF4
Example 2: NH3
Example 3: H2S
Example 4: NH4+
Example 5: PO43-
Example 6: CO2
Example 7: CO
Example 8: BCl4
RESONANCE
Draw the Lewis Structure for O3
Lewis Structure for O3
Example 9: NO3
−
Example 10: SO3
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