Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Dipole-dipole interactions are the only non-covalent interactions, resulting in hydrogen bondformation
Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical
In thelight of the above statements, choose the most appropriate answer from the options given below :
Text Solution
Verified by ExpertsA
Dipole - Dipole are not only the interaction responsible for hydrogen bond formation. Ion-dipole can also be responsible for hydrogen bond formation.
F is most electronegative element and anhydrous HF in solid phase has symmetrical hydrogen bonding. The strongest H -bonds are formed by F atoms. Some hydrogen bonding also occurs in the gas, which consists of a mixture of cyclic 
polymers, dimeric 
, and monomeric HF.
Hence, option is the correct answer.
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