Which
molecule, H2S or H2Se, is more polar and why?
A. H2Se
is more polar than H2S because H2Se has greater
dipole-dipole forces than H2S since the H-Se bond is more polar than
the H-S bond.
B. H2S
is more polar than H2Se because H2S has greater
dipole-dipole forces than H2Se, since H2S has two lone
pairs of electrons and H2Se does not.
C. H2S
is more polar than H2Se because H2S has greater
dipole-dipole forces than H2Se since the H-S bond is more polar than
the H-Se bond.
D. H2Se
is more polar than H2S because H2Se has greater
dipole-dipole forces than H2S, since H2Se has two lone
pairs of electrons and H2S does not.
E. H2Se
is more polar than H2S because H2Se has a higher
molecular mass than H2S, and molecular mass is the most important
factor in determining polarities of molecules.




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