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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Understand the Molecular Structure
- C^2H^2 is acetylene (ethyne) - It has a linear molecular geometry - Contains two carbon atoms triple-bonded and two hydrogen atoms
Step 3:: Analyze Electronegativity
- The difference between C and H is small: $$|2.55 - 2.20| = 0.35
- Hydrogen has an electronegativity of 2.20
Step 4:: Examine Molecular Symmetry
- The molecule is perfectly linear: $$H-C \equiv C-H
- The bond dipoles are equal in magnitude but opposite in direction - These dipoles cancel each other out
Step 5:: Determine Polarity
- Despite having polar bonds, the overall molecular geometry results in zero net dipole moment - The symmetrical arrangement means the charge is evenly distributed
Final Answer
C^2H^2 is a NONPOLAR molecule due to its linear symmetry and canceling bond dipoles.
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