Question #ec927
1 Answer
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...
http://ericaandchristinagroup13period7.weebly.com/reactivity-and-electronegativity.html
Now, just imagine the Hydrogen to be somewhere near Boron, you can calculate the bond polarity.
Example Question (with real values on Pauling Scale) : -
N_2 (0)-> Now way! They are the same atoms...BH_3 (0.2)-> Not Much... ( remember, I told you to imagine the Hydrogen to be somewhere near Boron )HCl (1.0)-> Yeah... Quite Much...CH_4 (0.4)-> Bit more thanBH_3 ....