# Are "CCl"_4 or "CBr"_4 polar?

##### 1 Answer
Apr 22, 2017

The bond is, the molecule is not................

#### Explanation:

We could represent the polarity of an individual $C - C l$ bond as ""^(delta+)C-Cl^(delta-) in that chlorine is more electronegative than carbon, and charge separation, i.e. polarity occurs. And thus the $C - C l$ bond is POLAR. But molecular polarity is the result of the VECTOR sum of the individual bond dipoles. And thus when we sum geometrically in a vector fashion, the RESULTANT bond dipole is ZERO.............And thus ${\text{CCl}}_{4}$ and ${\text{CBr}}_{4}$ are NON-POLAR molecules, whereas ${\text{HCCl}}_{3}$ and ${\text{CH"_2"Cl}}_{2}$ are POLAR........

Do you appreciate this distinction?