Which of the molecules in Problem \(17.72\) represent a pair of isomers? Discuss their differences in terms of bonds and/or linear versus branched.

First, let's list the molecules mentioned in Problem 17.72. (Note: You need to refer to the actual molecule structures from the original problem source. Make sure to study those structures before moving on.) 1. Molecule A 2. Molecule B 3. Molecule C 4. Molecule D

To determine if any of these molecules are isomers, let's compare them by focusing on their differences in terms of the types of bonds they have and whether they are linear or branched structures: 1. Compare Molecules A and B. 2. Compare Molecules A and C. 3. Compare Molecules A and D. 4. Compare Molecules B and C. 5. Compare Molecules B and D. 6. Compare Molecules C and D. For each comparison, analyze each molecule's structural formula and atom connectivity to check for isomers.

Now that we have compared each molecule pair, let's discuss their differences in terms of bonds and linear/branched structures: 1. A vs. B: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures). 2. A vs. C: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures). 3. A vs. D: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures). 4. B vs. C: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures). 5. B vs. D: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures). 6. C vs. D: (Provide a brief comparison of the two molecules, focusing on their differences in terms of bonds and linear/branched structures).

Based on the comparison of the molecules in Problem 17.72, state which pair (if any) represents a set of isomers. Summarize the differences between the isomers in terms of their bonds and linear versus branched structures.