Question:
What type of overlap is involved in the formation of C $-$ H bonds in acetylene molecules?
What type of overlap is involved in the formation of C $-$ H bonds in acetylene molecules?
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Alkanes use $sp^3-s$, alkenes use $sp^2-s$, and alkynes use $sp-s$ for $C-H$ bonds.
Updated On: Apr 30, 2026
- $sp^3 - s$
- $sp^2 - s$
- $sp - s$
- $sp - sp$
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The Correct Option is C
Solution and Explanation
Step 1: Structure of Acetylene
Acetylene ($C_2H_2$) is $H-C \equiv C-H$.
Step 2: Hybridization
Carbon atoms in a triple bond are $sp$ hybridized.
Step 3: Bond Overlap
The $C-H$ sigma bond is formed by the overlap of an $sp$ hybrid orbital from Carbon and a $1s$ orbital from Hydrogen.
Step 4: Conclusion
The overlap is $sp - s$.
Final Answer:(C)
Acetylene ($C_2H_2$) is $H-C \equiv C-H$.
Step 2: Hybridization
Carbon atoms in a triple bond are $sp$ hybridized.
Step 3: Bond Overlap
The $C-H$ sigma bond is formed by the overlap of an $sp$ hybrid orbital from Carbon and a $1s$ orbital from Hydrogen.
Step 4: Conclusion
The overlap is $sp - s$.
Final Answer:(C)
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