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The compound that will have a permanent dipole moment among the following is- |
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Answer»
 `C Cl_(4) and C_(2)Br_(2)` are symmetrical MOLECULES. HENCE in `C Cl_(4)`, the resultant of two C-Cl bond moments CANCEL the resultant of other two C-Cl bond MOMENT. Again, in `C_(2)Br_(2)`, two C-Br bond moments cancel out each other. In case of trans-dichloroethane, two C-Cl bond moments are cancelled by each other. Again, two C-H bond moments are cancelled by each other. In `CH_(2)Cl`, the resultant of two CCl bond moments is reinforced by resultant of two C-H bond moments. Therefore `CH_(2)Cl_(2)` (dipole moment = 1.62D) has permanent dipole moment. |
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