Dipole-induced dipole interactions are present in which of the following pairs?
Dipole-induced dipole interactions are present in which of the following pairs?
$\mathrm{H}_2 \mathrm{O}$ and alcohol
$\mathrm{Cl}_2$ and $\mathrm{CCl}_4$
$\mathrm{HCl}$ and $\mathrm{He}$ atoms
$\mathrm{SiF}_4$ and $\mathrm{He}$ atoms
Solution
Dipole-induced dipole interaction are present in the pair in which the first species is polar and the other is non-polar.
$\mathrm{H}_2 \mathrm{O}$ and alcohol both are polar molecules, so there exists dipole-dipole interactions in between them.
$\mathrm{Cl}_2$ and $\mathrm{CCl}_4$ both are non-polar so there exists induced dipole-induced dipole interactions in between them. Similar is true for $\mathrm{SiCl}_4$ and $\mathrm{He}$ atoms pair.
$\mathrm{HCl}$ is a polar molecule, whereas $\mathrm{He}$ atoms are non-polar, so in between them dipole-induced dipole interactions exist :