Which of the following single covalent bonds is the most polar?

A. C-H

B. C-F

C. C-Br

D. C-N

E. C-C

Question

Which of the following single covalent bonds is the most polar?

A. C-H

B. C-F

C. C-Br

D. C-N

E. C-C

anonymous · Answer

Please help! :(

abb0t · Answer

Those with the largest difference in electronegativity is the "most" polar. You can refer to the trend in periodic table for a rough estimate of how large their differences are.

Some of the important values you should know is of fluorine (has the highest electronegativity value at 4.0) You should base your value(s) from the distance it is from fluorine. Electro negativity decreases as you move AWAY from fluorine, and increases as you move towards fluorine. 
For instance, between Silicone (Si) and Oxygen (O) you would expect oxygen to be more electronegative than silicone simply because it's closer to fluorine. 

NOTE: hydrogen ~2.1

anonymous · Answer

Would B be the correct answer? @abb0t

anonymous · Answer

yes....B would be the correct answer.

anonymous · Answer

Thanks!!! :)