Question #76da6

1 Answer
Nov 20, 2016

Here follows the explanation with proper reasons.


Phosphorus #(P)# is having the highest atomic radii among all others. So #P-H# bond is having the lowest polarity.

Now among, #C,N,O,F#, carbon is having highest electropositivity & moreover C has the highest atomic radii. So, C is having the lowest polarity among these four.

Now among, #N,O,F#, N has the highest electro positivity. So, N has the lowest polarity among these three.

Now among, #O,F#, O has the highest electro positivity. So, O has lower polarity than F.

Hence, the remaining F atom is having highest electonegativity among P,V,N,O and F.

So, the order of bond polarity in the order of increasing electro negativity is:

#P-H < C-H < N-H < O-H < F-H# .


There is a special type of very strong physical bond present known as Hydrogen Bond or rather Hydrogen Bonding present only in three atoms of the entire periodic table, namely, N,O,F due to their very high electro negativity as well as their very small atomic sizes !!

Hope it Helps :)