Among the following which compound has lowest boiling point?

Options

A. `CH_(3)-underset(CH_(3))underset(|)(CH) - CH_(2)Br`
B. `CH_(3) - underset(Br)underset(|)(CH) - CH_(2) - CH_(3)`
C. `CH_(3) - underset(Br)underset(|)overset(CH_(2))overset(|)(C) - CH_(3)`
D. `CH_(3) - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C) - Br`

Explanation

To determine which compound has the lowest boiling point among a given set of compounds, we need to consider the factors that influence boiling points. Here’s a step-by-step solution:

### Step 1: Understand Boiling Point Factors
Boiling point is influenced by several factors, including molecular mass and molecular structure (branching). Generally:
- **Higher molecular mass** leads to **higher boiling points** due to increased van der Waals forces.
- **Increased branching** in a molecule leads to a **lower boiling point** because it reduces the surface area available for intermolecular interactions.

### Step 2: Analyze the Given Compounds
Assuming we have a list of isomeric compounds (which is common in such questions), we need to analyze their structures:
- Identify the molecular mass of each compound.
- Determine the degree of branching in each compound.

### Step 3: Compare the Compounds
- For compounds with the same molecular mass, the one with the most branching will have the lowest boiling point.
- If there are compounds with different molecular masses, the one with the lowest molecular mass will typically have the lowest boiling point, unless it has significant branching.

### Step 4: Conclusion
After analyzing the compounds based on the above criteria, we can conclude which compound has the lowest boiling point.