Question:
Which of the following has the strongest C–X bond?
Which of the following has the strongest C–X bond?
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Bond strength increases as bond length decreases; hence C–F is strongest among C–X bonds.
Updated On: Jul 18, 2026
- CH\(_3\)–Cl
- CH\(_3\)–I
- CH\(_3\)–F
- CH\(_3\)–Br
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The Correct Option is C
Solution and Explanation
Step 1: Understand bond strength trend.
C–X bond strength depends on bond length and electronegativity difference. Shorter bonds are stronger.
Step 2: Compare atomic size of halogens.
F < Cl < Br < I in size. Smaller atoms form shorter and stronger bonds with carbon.
Step 3: Analyze C–F bond.
C–F bond is shortest due to small size of fluorine and high electronegativity, leading to strongest bond.
Step 4: Compare with others.
C–I is weakest due to large size and poor overlap. Trend: \[ C-F \gt C-Cl \gt C-Br \gt C-I \]
Step 5: Final conclusion.
\[ \boxed{CH_3-F} \]
C–X bond strength depends on bond length and electronegativity difference. Shorter bonds are stronger.
Step 2: Compare atomic size of halogens.
F < Cl < Br < I in size. Smaller atoms form shorter and stronger bonds with carbon.
Step 3: Analyze C–F bond.
C–F bond is shortest due to small size of fluorine and high electronegativity, leading to strongest bond.
Step 4: Compare with others.
C–I is weakest due to large size and poor overlap. Trend: \[ C-F \gt C-Cl \gt C-Br \gt C-I \]
Step 5: Final conclusion.
\[ \boxed{CH_3-F} \]
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