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which of the following has net dipole moment a.CCl4 b.C2H2 c.BF3 d.NH3
a,c,d has net dipole moment
Between all these molecules NH3 will have net dipole moment as it is pyramidal in shape with 1 lone pair of e- on the top of the pyramid,and 3-H atoms going down.The bond dipoles of three N-H in this molecule do not cancel each other & thus net dipole moment is of 1.49D.Besides this the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of 3 N-H bonds and thus adds on the resultant of three.Thanks & regardsAarti Guptaaskiitians Faculty
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