
What is the weakest intermolecular force?
(A) Hydrogen bonding
(B) Dispersion forces
(C) Ionic bonding
(D) Dipole-dipole
Answer
153.6k+ views
Hint: Intermolecular forces are those forces which hold a molecule together by means of attraction or repulsion force. The temporary attractive forces that result when the electrons in two adjacent atoms occupy positions to form temporary dipoles are the weakest.
Complete step-by-step answer:
The London dispersion force is the weakest intermolecular force as a temporary attractive force results in temporary dipoles in the molecules. This force is also known as induced dipole-induced dipole attraction. These attractive forces cause non-polar substances to condense to liquids and freeze to solids at low temperatures.
Because of constant motion of electrons, an atom or molecule can have a temporary dipole i.e. instantaneous, when its electrons are distributed unsymmetrically around the nucleus. This causes distortion in the neighbouring atom or molecule by the appearance. This results in an electrostatic attraction between the two atoms or molecules. For example. Fluorine molecules or noble gases.
While ionic bonding is the strongest as it is a permanent chemical connection between two atoms. And hydrogen bonding is also a strong dipole-dipole interaction between hydrogen atom and a highly electronegative atom.
Hence, the correct option is (B).
Note: The strength of London dispersion forces increases with polarizability. The interaction between two dipoles is expressed as its strength, \[\mu \]. It is directly proportional to the strength of the electric field. Vander Waal forces come under this category.
Complete step-by-step answer:
The London dispersion force is the weakest intermolecular force as a temporary attractive force results in temporary dipoles in the molecules. This force is also known as induced dipole-induced dipole attraction. These attractive forces cause non-polar substances to condense to liquids and freeze to solids at low temperatures.
Because of constant motion of electrons, an atom or molecule can have a temporary dipole i.e. instantaneous, when its electrons are distributed unsymmetrically around the nucleus. This causes distortion in the neighbouring atom or molecule by the appearance. This results in an electrostatic attraction between the two atoms or molecules. For example. Fluorine molecules or noble gases.
While ionic bonding is the strongest as it is a permanent chemical connection between two atoms. And hydrogen bonding is also a strong dipole-dipole interaction between hydrogen atom and a highly electronegative atom.
Hence, the correct option is (B).
Note: The strength of London dispersion forces increases with polarizability. The interaction between two dipoles is expressed as its strength, \[\mu \]. It is directly proportional to the strength of the electric field. Vander Waal forces come under this category.
Recently Updated Pages
JEE Main 2022 (June 29th Shift 2) Maths Question Paper with Answer Key

JEE Main 2023 (January 25th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 29th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 26th Shift 2) Chemistry Question Paper with Answer Key

JEE Main 2022 (June 26th Shift 2) Maths Question Paper with Answer Key

JEE Main 2022 (June 29th Shift 1) Physics Question Paper with Answer Key

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Degree of Dissociation and Its Formula With Solved Example for JEE

The stability of the following alkali metal chlorides class 11 chemistry JEE_Main

Displacement-Time Graph and Velocity-Time Graph for JEE

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

JEE Advanced Weightage 2025 Chapter-Wise for Physics, Maths and Chemistry

NCERT Solutions for Class 11 Chemistry In Hindi Chapter 1 Some Basic Concepts of Chemistry

Learn About Angle Of Deviation In Prism: JEE Main Physics 2025

Electrical Field of Charged Spherical Shell - JEE
