Arrange the molecules in increasing strength of intermolecular forces (Weakest = 1; Strongest = 4) (CH3)2CO CH3OH NaOCH 3 CH3CH₂CH3 1. 1 2. 2 3. 3 4. 4

Introduction

The main types of intermolecular forces are London dispersion forces, dipole-dipole interactions, and hydrogen bonding. London dispersion forces are the weakest of intermolecular forces and are caused by the temporary dipole-dipole interactions between atoms or molecules. Dipole-dipole interactions occur when two molecules have a permanent dipole or electric charge. Hydrogen bonding is a stronger type of attraction that occurs when hydrogen atoms are covalently bonded to a highly electronegative atom, such as oxygen or nitrogen.

The strength of intermolecular forces can be affected by different factors, such as temperature, pressure, and the type of substance. For example, the increasing temperature can reduce the strength of London dispersion forces, while increasing pressure can increase the strength of dipole-dipole interactions.