Which bond is more polar B-Cl or C-Cl ?

×

Error message

Warning: Illegal string offset 'theme_pager_link' in cleanpager_theme_registry_alter() (line 338 of /home/yeahchemistry/public_html/sites/all/modules/cleanpager/cleanpager.module).
Home >> Practice Problems
hey
Explanation: 

The difference in the electronegativities of chlorine and boron is 3.0 - 2.0 = 1.0 ; the difference in between chlorine and carbon is 3.0 = 2.5 = 0.5 .

Consequently, the B-Cl bond is more polar ; the chlorine atom asrries the partial negative charge because it has higher electronegativity .

We should be able to reach this same conclusion without using a table of electronegativties ; we need a periodic table and because boron is to the left of carbon in the periodic table ,we will predict that is has a lower attraction for electron , Chlorine being on the right side of the table has a stronger attraction for electrons.The more polar bond will be the one between the atoms having the lowest attractions of electrons and the highest attraction .

Answer: 

B-Cl is more polar