Which of the following pairs correctly represent hydrogen bonding

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Which of the following pairs correctly represent hydrogen bonding?

The image contains four separate structural representations labeled A, B, C, and D. These structures depict hydrogen bonding interactions, characteristic in biological systems like proteins and nucleic acids. The structures are described as follows:

- **Structure A**: Shows an oxygen (O) atom double-bonded to a carbon (not shown explicitly) and also involved in a hydrogen bond as an acceptor with a nitrogen (N) atom, which is bonded to two hydrogen (H) atoms. The dashed line represents the hydrogen bond.

- **Structure B**: This is a hydrogen bond between a nitrogen (N) atom and an oxygen (O) atom. The nitrogen is triple-bonded to a carbon (not shown explicitly), and the oxygen is part of a larger molecule. The blue dashed line represents the hydrogen bond between the nitrogen and a hydrogen atom attached to the oxygen.

- **Structure C**: Depicts a hydrogen bond between an oxygen (O) atom and a nitrogen (N) atom. The oxygen is bonded to a carbon atom (not shown) and a hydrogen atom. The nitrogen is bonded to two methyl groups. The blue dashed line connects the hydrogen on the oxygen to the nitrogen, indicating a hydrogen bond.

- **Structure D**: Displays a hydrogen bond between a nitrogen (N) atom and an oxygen (O) atom. The nitrogen is connected to two methyl groups, and the oxygen is involved in the hydrogen bond with a hydrogen connected to another nitrogen. The blue dashed line represents the hydrogen bond.

These representations are commonly used to illustrate interactions like peptide bonds in proteins or base pairing in nucleic acids, emphasizing the importance of hydrogen bonding in molecular stability and function.
Transcribed Image Text:The image contains four separate structural representations labeled A, B, C, and D. These structures depict hydrogen bonding interactions, characteristic in biological systems like proteins and nucleic acids. The structures are described as follows: - **Structure A**: Shows an oxygen (O) atom double-bonded to a carbon (not shown explicitly) and also involved in a hydrogen bond as an acceptor with a nitrogen (N) atom, which is bonded to two hydrogen (H) atoms. The dashed line represents the hydrogen bond. - **Structure B**: This is a hydrogen bond between a nitrogen (N) atom and an oxygen (O) atom. The nitrogen is triple-bonded to a carbon (not shown explicitly), and the oxygen is part of a larger molecule. The blue dashed line represents the hydrogen bond between the nitrogen and a hydrogen atom attached to the oxygen. - **Structure C**: Depicts a hydrogen bond between an oxygen (O) atom and a nitrogen (N) atom. The oxygen is bonded to a carbon atom (not shown) and a hydrogen atom. The nitrogen is bonded to two methyl groups. The blue dashed line connects the hydrogen on the oxygen to the nitrogen, indicating a hydrogen bond. - **Structure D**: Displays a hydrogen bond between a nitrogen (N) atom and an oxygen (O) atom. The nitrogen is connected to two methyl groups, and the oxygen is involved in the hydrogen bond with a hydrogen connected to another nitrogen. The blue dashed line represents the hydrogen bond. These representations are commonly used to illustrate interactions like peptide bonds in proteins or base pairing in nucleic acids, emphasizing the importance of hydrogen bonding in molecular stability and function.
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Step 1: Determine the correct representation of hydrogen bonding from the given data:

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The pairs:

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