Question:
What is the bond length of C–H bond in alkanes?
What is the bond length of C–H bond in alkanes?
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Single bonds are longer than double and triple bonds between the same atoms.
Updated On: Feb 11, 2026
- 154 pm
- 120 pm
- 133 pm
- 112 pm
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The Correct Option is D
Solution and Explanation
Step 1: Nature of C–H bond in alkanes.
In alkanes, carbon is \( sp^3 \)-hybridised and forms single sigma bonds with hydrogen.
Step 2: Standard bond length value.
The typical bond length of a C–H bond in alkanes is approximately 1.12 Å.
Step 3: Unit conversion.
\[ 1.12 \, \text{Å} = 112 \, \text{pm} \]
Step 4: Conclusion.
Hence, the correct bond length is 112 pm.
In alkanes, carbon is \( sp^3 \)-hybridised and forms single sigma bonds with hydrogen.
Step 2: Standard bond length value.
The typical bond length of a C–H bond in alkanes is approximately 1.12 Å.
Step 3: Unit conversion.
\[ 1.12 \, \text{Å} = 112 \, \text{pm} \]
Step 4: Conclusion.
Hence, the correct bond length is 112 pm.
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