GENERAL KNOWLEDGE

Detailed explanation-1: -When another atom or molecule comes in contact with this induced dipole, it can be distorted that leads to an electrostatic attraction between either atoms or molecules. If these atoms or molecules touch each other, dispersion forces are present between any of them.

Detailed explanation-2: -London dispersion forces result from the coulombic interactions between instantaneous dipoles. Dispersion forces are present between all molecules (and atoms) and are typically greater for heavier, more polarizable molecules and molecules with larger surface areas.

Detailed explanation-3: -Alkanes are non-polar and exhibit no hydrogen bonding, so Van der Waals London dispersion are the only IMFs they exhibit.

Detailed explanation-4: -London dispersion forces are always present, but they vary widely in strength. In light atoms, they are very small, because there aren’t many electrons and they are held tightly.

Detailed explanation-5: -Hydrogen bonding is in fact a special type of dipole-dipole interaction, so water molecules have dipole-dipole interactions as well. London dispersion forces exist between all types of molecules, so they are present in water molecules as well.