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Reactivity with Halogens and Hydrogen (Group 2)

The increasin...

Question

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

(i) < (ii) < (iv) < (iii)

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(ii) < (i) < (iv) < (iii)

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(i) < (ii) < (iii) < (iv)

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(ii) < (i) < (iii) < (iv)

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Solution

The correct option is B (ii) < (i) < (iv) < (iii)
The strength of $H - b o n d$ depends on the following factors:
(i) Electronegativity of element covalently bonded to a hydrogen atom.
(ii) Size of the electronegative element.
(iii) Ease of donation of lone pair of electrons by electronegative element.
Electronegativity order $: F > O > S$
Hence, the order is $(i i) < (i) < (i v) < (i i i) .$

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