1.

The increasing order of the strength of hydrogen bond in the following mentioned linkages is : (i)O-H-S(ii)S-H-O (iii)F-H-F(iv)F-H-O

Answer»

(i)lt(ii)lt(iv)lt(iii)
(ii)lt(i)lt(iv)lt(iii)
(i)lt(ii)lt(iii)lt(iv)
(ii)lt(i)lt(iii)lt(iv)

Solution :Strength of H-bond depends on following FACTORS
(i)ELECTRONEGATIVITY of ELEMENT covalently bonded to hydrogen atom
(ii)Size of ELECTRONEGATIVE element.
(iii)Ease of donation of lone pair of electrons by electronegative element.


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