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Questions and Answers
How should the carbon atoms of a benzene ring be numbered when two or more groups are attached?
How should the carbon atoms of a benzene ring be numbered when two or more groups are attached?
- In reverse alphabetical order
- Based on the electronegativity of the groups
- In ascending order of group size
- To ensure the lowest possible numbers for attachment positions (correct)
Which group gets the lower number when two groups are attached to a benzene ring?
Which group gets the lower number when two groups are attached to a benzene ring?
- The group that comes first in alphabetical order (correct)
- The larger group by molecular weight
- The group with the highest electronegativity
- The group that is attached closer to the center of the ring
What is the primary goal of numbering carbon atoms in a benzene ring with multiple attachments?
What is the primary goal of numbering carbon atoms in a benzene ring with multiple attachments?
- To obtain the lowest possible attachment position numbers (correct)
- To create a symmetrical structure
- To emphasize the groups with higher reactivity
- To minimize the number of attached groups
In a benzene ring with three different substituent groups, how is the numbering of carbon atoms typically prioritized?
In a benzene ring with three different substituent groups, how is the numbering of carbon atoms typically prioritized?
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Why is it important to obtain the lowest possible numbers for attachment positions on a benzene ring?
Why is it important to obtain the lowest possible numbers for attachment positions on a benzene ring?
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Study Notes
Naming Benzene Derivatives
- When two or more groups are attached to a benzene ring, their positions are indicated by numbering the carbon atoms of the ring.
- The goal is to obtain the lowest possible numbers for the attachment positions.
- The group that comes first alphabetically is given the lower number.
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