Problem: Rank the following in order of increasing polarity: CH2Br2, CF2Cl2,CF2Br2, CBr4.A. CBr4 < CH2Br2 < CF2Cl2 < CF2Br2B. CH2Br2< CF2Cl2 < CF2Br2 < CBr4C. CBr4 < CH2Br2 < CF2Br2 < CF2Cl2D. CBr4 < CF2Br2 < CF2Cl2 < CH2Br2E. CH2Br2< CF2Br2 < CF2Cl2 < CBr4

FREE Expert Solution

Recall: Polar molecules: has a net dipole

Nonpolar molecules: no net dipole (dipoles cancel out or has nonpolar bonds)


Drawing the Lewis structure + dipole arrows of each:

Note: EN of C = 2.5; EN of H = 2.2

EN of F = 4.0; EN of Cl = 3; EN of Br = 2.8


All of the given has tetrahedral geometry.

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Problem Details

Rank the following in order of increasing polarity: CH2Br2, CF2Cl2,CF2Br2, CBr4.

A. CBr4 < CH2Br2 < CF2Cl2 < CF2Br2

B. CH2Br2< CF2Cl2 < CF2Br2 < CBr4

C. CBr4 < CH2Br2 < CF2Br2 < CF2Cl2

D. CBr4 < CF2Br2 < CF2Cl2 < CH2Br2

E. CH2Br2< CF2Br2 < CF2Cl2 < CBr4