REPRESENTATIONS OF ORGANIC MOLECULES Identifying isomers and resonance structures Determine the relationship between Structure A and Structure B in each row of the table. Structure A Structure B Relationship O isomers :0: HH :ö: H H H. Н. C resonance structures HH H H O neither H Isomers H-C-H H H:Ö: H H-C-C-N-C-H ö=c-N-H resonance structures H H–Ċ–H O neither O isomerS H. H H-N=C=N-C-H H-C-C-NEN: O resonance structures H. H H O neither

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter23: Carbon: Not Just Another Element
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**Identifying Isomers and Resonance Structures**

### Determine the relationship between Structure A and Structure B in each row of the table.

#### Table:

1. **Row 1:**
   - **Structure A:**
     - Two carbon atoms (C) double-bonded.
     - The left carbon has two hydrogen atoms (H) and a hydroxyl group (OH).
     - The right carbon is bonded to one hydrogen and another hydroxyl group.
   - **Structure B:**
     - Similar to Structure A but the hydroxyl groups are on different carbons.
   - **Relationship:**
     - **Isomers**

2. **Row 2:**
   - **Structure A:**
     - Three carbon atoms in a chain.
     - The left and right carbons have three hydrogen atoms each, while the middle carbon is double-bonded to an oxygen atom (O).
   - **Structure B:**
     - Identical to Structure A in terms of bonding and arrangement.
   - **Relationship:**
     - **Resonance Structures**

3. **Row 3:**
   - **Structure A:**
     - Three-carbon chain with nitrogen (N) triple-bonded to the first carbon.
     - The second carbon is bonded to two hydrogen atoms.
   - **Structure B:**
     - Similar structure but with a positive charge on the middle carbon and a negative charge on the nitrogen.
   - **Relationship:**
     - **Resonance Structures**

**Note:**
- **Isomers** are compounds with the same molecular formula but different connectivity or arrangement of atoms.
- **Resonance Structures** are different ways to draw the same molecule, showing the delocalization of electrons.
Transcribed Image Text:**Identifying Isomers and Resonance Structures** ### Determine the relationship between Structure A and Structure B in each row of the table. #### Table: 1. **Row 1:** - **Structure A:** - Two carbon atoms (C) double-bonded. - The left carbon has two hydrogen atoms (H) and a hydroxyl group (OH). - The right carbon is bonded to one hydrogen and another hydroxyl group. - **Structure B:** - Similar to Structure A but the hydroxyl groups are on different carbons. - **Relationship:** - **Isomers** 2. **Row 2:** - **Structure A:** - Three carbon atoms in a chain. - The left and right carbons have three hydrogen atoms each, while the middle carbon is double-bonded to an oxygen atom (O). - **Structure B:** - Identical to Structure A in terms of bonding and arrangement. - **Relationship:** - **Resonance Structures** 3. **Row 3:** - **Structure A:** - Three-carbon chain with nitrogen (N) triple-bonded to the first carbon. - The second carbon is bonded to two hydrogen atoms. - **Structure B:** - Similar structure but with a positive charge on the middle carbon and a negative charge on the nitrogen. - **Relationship:** - **Resonance Structures** **Note:** - **Isomers** are compounds with the same molecular formula but different connectivity or arrangement of atoms. - **Resonance Structures** are different ways to draw the same molecule, showing the delocalization of electrons.
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