BITSAT2018ChemistryChemical Bonding and Molecular StructureActual

Which substance has a dipole moment?

Options

ACCl 4
BCH 2 Cl 2
CC 2 Cl 2
DC 2 Cl 4

Correct answer

B. CH 2 Cl 2

Step-by-step solution

CH 2 Cl 2 is similar to CH 4 (tetrahedral) but it has three different bond angles. HCH , HCCl , ClCCl , which are close to but not equal to 109 . 5 ° . Since, electronegativity of Cl > C > H the bond dipole moments do not cancel and the molecule has a dipole moment.

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