Short Answer Type
Long Answer TypeShort Answer TypeThe molecule of SO2 has a dipole moment. Is the molecule linear or bent? Explain your answer.
Predict the dipole moment of;
(i) a molecule of the type AX4 having a square planar geometry.
(ii) a molecule of the type AX5 having a trigonal bipyramdial.
(iii) a molecule of the type AX6 having an octahedral geometry.
Which of the two - NH3 and NF3 has higher dipole moment and why?
NH3 has a higher dipole moment. Both these molecules have the pyramidal shape with one lone pair.
In the case of NH3, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the three N – H bonds. Therefore, it adds on the resultant of the N – H bonds. But in a case of NF3, the orbital dipole due to the lone pair is in the opposite direction to the resultant dipole moment of the three N – F bonds. Thus the lone pair moment cancels the resultant N – F bond moment. Consequently, the dipole moment of NF3 is low.
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