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  4. Which substance has a dipole moment?

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Q. Which substance has a dipole moment?

Chemical Bonding and Molecular Structure

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 $109.5^{\circ}$. Since, electroegativity of $Cl > C > H$, the bond moments do not cancel and the molecule has a dipole moment

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