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Hydrogen bonding is strongest in...

Hydrogen bonding is strongest in

A

O-H.. .S

B

S-H....O

C

F-H....F

D

F-H....O

Text Solution

Verified by Experts

The correct Answer is:
C
Hydrogen bonding is strongest in F-H... F This is because, out of F. O and N, F is the smallest and most electronegative.
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The hydrogen bond is strongest in

It is a common observation that many compounds containing hydrogen attached to highly electronegative elements such as oxygen, nitrogen, or fluorine, often exhibit unexpected properties, such as relatively high melting points, boiling points, viscosity, solubility in water etc Such an unexpected behaviour can be explained on the basis of hydrogen bonding. When a hydrogen atom is attached to a highly electronegative element of small size such as F. N, 0. etc. the electronegative atoms strongly attracts the shared pair of electrons towards it self. As a result, the hydrogen atom becomes slightly positive and the electronegative element becomes slightly negative when two molecules of such a substance say HF come close to each other, the negatively charged fluorine atom of one molecule attracts the positively charged hydrogen atom of the other molecule. A hydrogen atom, thus links to highly electronegative atoms, one by a strong covalent bond and the other by weak electrostatic attraction as shown ahead overset(delta+)H-overset(delta-)F....overset(delta+)H-overset(delta-)F , the dotted line represents a hydrogen bond. Hydrogen bond is strongest in

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DINESH PUBLICATION-THE HALOGEN FAMILY-Selected Straight Objective Type MCQs
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  6. The correct increasing order of bond dissociation energy for N2, O2, F...

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  12. The type of hybrid orbitals used by chlorine atom in ClO(2)^(-) is :

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  15. KF combines with to form KHF2. The compound contains the species :

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  17. The correct order of acidic strength is

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  18. The set with the correct order of acidity is

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  19. The reaction 3ClO^(-)(aq)rarrClO(3)^(-)(aq)+2Cl^(-)(aq) an example of ...

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