When naming in the IUPAC system, the parent chain has which of the following characteristics? I.It is the part of the structure that is written horizontally.
II)It is the longest continuous chain.
III)It contains any double or triple bonds in the structure.
A) I, II, and III
B) I and II only
C) II and III only
D) I and III only
E) I only

Question

Quizplus · Accepted Answer

The parent chain in IUPAC nomenclature is chosen based on being the longest continuous chain (II) and containing the highest number of double or triple bonds to give the compound a higher priority in naming (III). The orientation of the chain (horizontal or vertical) is irrelevant to its selection as the parent chain (I).

When Naming in the IUPAC System, the Parent Chain Has