Question Detail

CHM 102 IUPAC Nomenclature Objective Question
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Question

If substituents are at C3 and C5 when numbering from the left, and C3 and C5 when numbering from the right, how do you decide?
Options
A Number from left to right by default
B Use alphabetical priority for the lower number
Correct Answer
C Add the coordinates together
D Choose the larger substituent for the higher number
Correct Answer

Option B is the correct answer.

Detailed Explanation

If the locant set is identical from both ends, the substituent that is alphabetically first gets the lower number.

Hint

This is the final tie-breaker rule.

Question Info

Course: CHM 102
Topic: IUPAC Nomenclature
Type: Objective
Difficulty: Not specified
Question 897 of 1999
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