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which of the following has net dipole moment a.CCl4 b.C2H2 c.BF3 d.NH3

which of the following has net dipole moment
a.CCl4 b.C2H2 c.BF3 d.NH3

Grade:12

2 Answers

raj kumar
33 Points
7 years ago
a,c,d has net dipole moment
Aarti Gupta
askIITians Faculty 300 Points
7 years ago
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 & regards
Aarti Gupta
askiitians Faculty

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