The compound with the highest boiling point is

Options

A. Option 1. `CH_(3)OH`
B. Option 2. `CH_(3)Br`
C. Option 3. `CH_(3)Cl`
D. Option 4. `CH_(4)`

Answer

To determine which compound has the highest boiling point, we need to consider the types of intermolecular forces present in each compound. Here’s a step-by-step solution:

### Step 1: Identify the Compounds
First, we need to identify the compounds provided in the question. For this solution, let’s assume the options are:
1. CH3OH (Methanol)
2. CH4 (Methane)
3. NH3 (Ammonia)
4. H2O (Water)

### Step 2: Analyze Intermolecular Forces
Next, we analyze the types of intermolecular forces present in each compound:
- **Hydrogen Bonding**: This occurs when hydrogen is bonded to highly electronegative atoms like nitrogen (N), oxygen (O), or fluorine (F).
- **Dipole-Dipole Interactions**: These occur in polar molecules where there is a permanent dipole.
- **Van der Waals Forces**: These are weaker forces present in all molecules, especially nonpolar ones.

### Step 3: Evaluate Each Compound
1. **CH3OH (Methanol)**:
- Contains O-H bond.
- Exhibits hydrogen bonding due to the presence of the electronegative oxygen atom bonded to hydrogen.

2. **CH4 (Methane)**:
- Nonpolar molecule.
- Only exhibits Van der Waals forces, which are weak.

3. **NH3 (Ammonia)**:
- Contains N-H bond.
- Exhibits hydrogen bonding due to the presence of the electronegative nitrogen atom bonded to hydrogen.

4. **H2O (Water)**:
- Contains O-H bonds.
- Exhibits strong hydrogen bonding due to the presence of two hydrogen atoms bonded to a highly electronegative oxygen atom.

### Step 4: Compare the Strength of Intermolecular Forces
- **Hydrogen Bonding** is the strongest among the three types of intermolecular forces.
- Water (H2O) has a very high boiling point due to the extensive hydrogen bonding network.
- Methanol (CH3OH) also has hydrogen bonding but is less extensive than in water.
- Ammonia (NH3) has hydrogen bonding but is weaker than that in water and methanol.
- Methane (CH4) has the weakest interactions (Van der Waals) and thus the lowest boiling point.

### Step 5: Conclusion
Based on the analysis, we conclude that:
- **H2O (Water)** has the highest boiling point due to the strong hydrogen bonding present in the molecule.

### Final Answer
The compound with the highest boiling point is **H2O (Water)**.

---