The total number of monohalogenated products formed by halogenation of 2,2,4-trimethylhexane is

Options

A. 5
B. 7
C. 6
D. 8

Explanation

To determine the total number of monohalogenated products formed by the halogenation of 2,2,4-trimethylhexane, we can follow these steps:

### Step 1: Understand the Structure of 2,2,4-Trimethylhexane
2,2,4-Trimethylhexane is a branched alkane with the following structure:
- It has a six-carbon chain (hexane).
- There are two methyl groups on the second carbon and one methyl group on the fourth carbon.

The structure can be represented as:
```
CH3
|
CH3-C-CH2-CH-CH3
| |
CH3 CH3
```

### Step 2: Identify the Possible Halogenation Sites
In halogenation, a hydrogen atom is replaced by a halogen atom (like Cl or Br). We need to identify the unique hydrogen atoms that can be replaced:
- The carbon atoms in the structure can be numbered as follows:
- C1: CH3 (terminal)
- C2: C with two CH3 groups (2 methyl groups)
- C3: CH2
- C4: C with one CH3 group
- C5: CH2
- C6: CH3 (terminal)

### Step 3: Count the Unique Hydrogen Atoms
Now, we need to determine how many unique types of hydrogen atoms there are:
1. **Hydrogens on C1 (3 H)**: All are equivalent.
2. **Hydrogens on C2 (0 H)**: No H here since it is fully substituted by methyl groups.
3. **Hydrogens on C3 (2 H)**: Both are equivalent.
4. **Hydrogens on C4 (3 H)**: All are equivalent.
5. **Hydrogens on C5 (2 H)**: Both are equivalent.
6. **Hydrogens on C6 (3 H)**: All are equivalent.

### Step 4: Identify Unique Monohalogenated Products
Now we can identify the unique monohalogenated products:
1. **Halogenation at C1**: 1 product (C1H3 → C1H2X)
2. **Halogenation at C3**: 1 product (C3H2 → C3H1X)
3. **Halogenation at C4**: 1 product (C4H3 → C4H2X)
4. **Halogenation at C5**: 1 product (C5H2 → C5H1X)
5. **Halogenation at C6**: 1 product (C6H3 → C6H2X)

### Step 5: Count the Total Unique Products
Now we can count the total number of unique monohalogenated products:
- From the above analysis, we have 5 unique sites where halogenation can occur.

### Conclusion
The total number of monohalogenated products formed by the halogenation of 2,2,4-trimethylhexane is **5**.

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