1.

Tetrachloromethane has no dipole moments though it has polar bonds

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Answer:

Now consider tetrachloromethane (CCl4) and dichloromethane (CH2Cl2). Both molecules have polar C—Cl BONDS with the negative ends of the dipoles pointed toward the CHLORINE ATOMS. However, CCl4 does not have a dipole moment because the vector SUM of the SYMMETRICALLY arranged C—Cl bonds around carbon is zero.



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