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 interaction, resulting in hydrogen bond formation.
Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical.
In the light of the above statements, choose the most appropriate answer form the options given below
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 interaction, resulting in hydrogen bond formation.
Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical.
In the light of the above statements, choose the most appropriate answer form the options given below
Option 1 -
A is true but R is false
Option 2 -
A is false but R is true
Option 3 -
Both A and R are true and R is the correct explanation of A
Option 4 -
Both A and R are true but R is NOT the correct explanation of A
-
1 Answer
-
Correct Option - 2
Detailed Solution:Not all dipole – dipole interactions are responsible for hydrogen bonding, so assertion A is false. F is most E. N atom and also hydrogen bonds in HF are symmetrical.
Similar Questions for you
The difference in boiling or melting point, even after nearly the same molecular geometry, is because opf the presence of hydrogen bond. HF forms intermolecular hydrogen bonds due to fluorine's high electronegativity. This intermolecular hydrogen bonding requires more energy due to break the hydrogen bonds and melt or boil. So, stronger intermolecular forces of HF result in a higher boiling point.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 687k Reviews
- 1800k Answers