Question

Question #ec927

Answer 1

Their distance in the periodic table...and...HCl (most bond polarity).

Explanation:

![https://www.precisionlabware.com/content/19-electronegativity-of-the-elements]()

This table shows that electronegativity increases diagonally...

![http://www.drcruzan.com/PeriodicTrends.html]()

Or more appropriately this one...


Now, just imagine the Hydrogen to be somewhere near Boron, you can calculate the bond polarity.

Example Question (with real values on Pauling Scale) : -

1. `N_2` (0) `->` Now way! They are the same atoms...
2. `BH_3` (0.2) `->` Not Much... ( remember, I told you to imagine the Hydrogen to be somewhere near Boron )
3. `HCl` (1.0) `->` Yeah... Quite Much...
4. `CH_4` (0.4) `->` Bit more than `BH_3`....