QQuestionChemistry
QuestionChemistry
The carbon tetrabromide molecule, CBr^4, is
A. a polar molecule with polar bonds.
B. a nonpolar molecule with polar bonds.
C. a nonpolar molecule with nonpolar bonds.
D. a polar molecule with nonpolar bonds.
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Understand the Molecular Structure
- Carbon tetrabromide (CBr4) has a tetrahedral molecular geometry - Carbon is at the center, with four bromine atoms symmetrically arranged around it
Step 3:: Analyze Bond Polarity
- Electronegativity difference: $$|2.96 - 2.55| = 0.41
- Carbon-bromine (C-Br) bonds are polar - The electronegativity difference between carbon and bromine creates bond polarity - This indicates polar covalent bonds
Step 4:: Evaluate Molecular Polarity
- In a tetrahedral geometry, the individual bond dipoles are symmetrically arranged - The symmetry causes the bond dipoles to cancel each other out - Result: Net molecular dipole moment is zero
Step 5:: Conclusion
- Polar bonds (C-Br) are present - But the molecule itself is nonpolar due to symmetric arrangement
Final Answer
A nonpolar molecule with polar bonds.
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