Problem: Identify the molecules with polar bonds and the polar molecules.a. CCl4 b. CH3Clc. H2Od. CO2e. O2

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FREE Expert Solution

a. CBr4

  • Carbon (EN = 2.5) → carbon is the central atom. 
  • Chlorine (EN = 3.0) 


          Group           Valence Electrons

C         4A                   1 × 4 e– = 4 e–

Cl        7A                   4 × 7 e– = 28 e–

       Total:  32 valence e–


  • Carbon prefers to form 4 bonds
  • Halogens, when not the central atom, form only 1 bond. 
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Problem Details

Identify the molecules with polar bonds and the polar molecules.

a. CCl4 
b. CH3Cl
c. H2O
d. CO2
e. O2

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