Question

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

• A. 5
• B. 7
• C. 6
• D. 8
• E. 9

Hint:

Always check symmetry before counting isomers.

Answer 1

The Correct Option is B

Concept: Counting distinct hydrogen environments (isomer counting)
---

Step 1: Understand the problem
Monohalogenation means replacing one hydrogen atom by a halogen atom. Different products arise only when hydrogens are chemically non-equivalent. ---

Step 2: Draw structure
2,4,4-Trimethylhexane has branching which creates symmetry and non-equivalent carbon atoms. ---

Step 3: Identify unique hydrogen positions
We count distinct carbon environments:
• Primary carbons (different environments)
• Secondary carbons
• Tertiary carbon Due to symmetry, some positions are equivalent. ---

Step 4: Count carefully
After eliminating equivalent positions: \[ \text{Total unique substitution positions} = 7 \] --- Final Answer: \[ \boxed{7} \]