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Questions and answers by
Mr.C
Answers (2)
I think it's A because you are looking at increasing molar mass in the halogens
It's A because NH3 and H2S are the only ones that have lone pairs and that means they are polar. BF3 have no lone pair so it's nonpolar and I2 is nonpolar so dipole-dipole intermolecular forces are between polar molecules
