Which of the folloiwng alkanes will give more than one monochloro product?

Options

A.
B.
C.
D.

Answer

To determine which alkane will give more than one monochloro product, we need to analyze the structure of each alkane provided in the options. A monochloro product is formed when one hydrogen atom in an alkane is replaced by a chlorine atom. The number of different monochloro products that can be formed depends on the number of unique hydrogen atoms that can be replaced.

### Step-by-Step Solution:

1. **Identify the Alkanes**: List the alkanes provided in the options. For this solution, let's assume the alkanes are:
- Option 1: CH3-CH3 (ethane)
- Option 2: CH3-CH2-CH3 (propane)
- Option 3: CH3-CH(CH3)-CH2-CH3 (2-methylbutane)
- Option 4: CH3-CH2-CH2-CH3 (butane)

2. **Analyze Each Alkane**:
- **Option 1 (Ethane)**: CH3-CH3
- All hydrogen atoms are equivalent. Replacing any hydrogen with chlorine will yield the same product (C2H5Cl). Thus, it gives only **one monochloro product**.

- **Option 2 (Propane)**: CH3-CH2-CH3
- The terminal hydrogens (on CH3) are equivalent, and the middle hydrogen (on CH2) is unique. Replacing one of the terminal hydrogens gives one product, while replacing the middle hydrogen gives another product (C3H7Cl). Thus, it gives **two monochloro products**.

- **Option 3 (2-Methylbutane)**: CH3-CH(CH3)-CH2-CH3
- There are two types of hydrogen atoms: those on the terminal CH3 groups and those on the CH2 group. Replacing a terminal hydrogen gives one product, while replacing a hydrogen from the CH2 gives another product. Thus, it gives **two monochloro products**.

- **Option 4 (Butane)**: CH3-CH2-CH2-CH3
- Similar to propane, the terminal hydrogens are equivalent, and the middle hydrogens are also equivalent. Replacing a terminal hydrogen gives one product, and replacing a middle hydrogen gives another product. Thus, it gives **two monochloro products**.

3. **Conclusion**:
- Ethane (Option 1) gives only one monochloro product.
- Propane (Option 2), 2-methylbutane (Option 3), and butane (Option 4) all give more than one monochloro product.

### Final Answer:
The alkanes that will give more than one monochloro product are **Option 2 (Propane), Option 3 (2-Methylbutane), and Option 4 (Butane)**.