How many constitutional isomers have the molecular formula C₆H₁₄? A) 4 B) 5 C) 6 D) 7

Question

Quizplus · Accepted Answer

To determine the number of constitutional isomers, we need to consider the different ways the atoms can be arranged in the molecule while still maintaining the same molecular formula.

First, we need to identify the different types of atoms in the formula:
- C: 1 atom
- S: 2 atoms
- H: 1 atom
- B: 16 atoms
- U: 114 atoms

Next, we can start building the different constitutional isomers by arranging the atoms in different ways. Here are the 5 possible constitutional isomers:

1. CSBUUUUUBBBBBBBBBBBBBBSSUUBUUU - This isomer has the sulfur atoms connected to the carbon and hydrogen atoms, and the boron and uranium atoms connected to each other in a long chain.
2. CBUUUUUSSBUUUUBBBBBBBBBBBBBBBUUBUU - This isomer has the sulfur atoms connected to each other, and the boron and uranium atoms also connected to each other, with the carbon and hydrogen atoms in the middle.
3. CSBUUUUUBBBBBBBBBBBBBBSSBUUUU - This isomer is similar to the first one, but with the sulfur atoms in the middle and the boron and uranium atoms at the ends.
4. CBUUUUUSUBBBBBBBBBBBBBBUUUUSSBUUUU - This isomer has the sulfur atoms at opposite ends, with the boron and uranium atoms in the middle.
5. CBUBBBBBBBBBBBBBBBUUSUUUBUUUUSSUUU - This isomer has the boron and uranium atoms connected to each other in a ring, with the carbon, sulfur, and hydrogen atoms on the outside.

Therefore, the answer is B) 5.

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How Many Constitutional Isomers Have the Molecular Formula C₆H₁₄