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Q. Arrange the following as stated.
-Increasing strength of hydrogen bonding ( X - H-X ).
$ \, \, \, \, \, \, \, \, \, \, \, \, \, \, O ,S,F,Cl, N $

IIT JEEIIT JEE 1991

Solution:

Strength of hydrogen bonding in X -H- X depends on
electronegativity as well as size of X . X with higher
electronegativity and smaller size forms stronger H-bond
. Hence, increasing order of strength of H-bond is
S