Rank the bonds from most polar to least polar.
c. H—O, H—N, H—C

Which of the following molecules would you expect to have a dipole moment of zero?

g. BeCl₂

h. BF₃

If the dipole moment of CH₃F is 1.847 D and the dipole moment of CD₃F is 1.858 D, which is more electronegative: hydrogen or deuterium?

Account for the difference in the shape and color of the potential maps for ammonia and the ammonium ion in Section 1.11.

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Rank the bonds from most polar to least polar.

d. C—H, C—C, C—N

Rank the bonds from most polar to least polar.

b. C—Cl, C—I, C—Br

Which of the following molecules would you expect to have a dipole moment of zero?

d. NH₃

e. H₂C═CH₂

f. H₂C═CHBr

According to the potential map for the ammonium ion <IMAGE>, which atom has the greatest electron density?

Two isomers of 1,2-dichloroethene are known. One has a dipole moment of 2.4 D; the other has zero dipole moment. Draw the two isomers, and explain why one has zero dipole moment.

CHCl=CHCl 1,2-dichloroethene