Bond strength influences reactivity of geminal dihalides

Steps:

• Identify structures: 1,1-difluoroethane (CH₃CHF₂) and 1,1-dichloroethane (CH₃CHCl₂).
• Recall reactivity trend in haloalkanes: depends on halogen-carbon bond strength for reactions like substitution or elimination.
• Compare bond energies: C-F (485 kJ/mol) exceeds C-Cl (328 kJ/mol).
• Conclude difluoro compound has stronger bonds, reducing reactivity.

Why A is correct:

• Bond dissociation energy data shows stronger C-F bonds require more energy to break, decreasing reactivity per organic chemistry principles.

Why the others are wrong:

• B: Not enough information; polarity depends on dipole moment, which is present but context unclear.
• C: Not enough information; bond strength comparison is standard, but question ambiguity on intent.
• D: Incomplete statement provided.

Final answer: A