The dipole - dipole interaction energy between stationary polar molecules is proportional to the $\frac{1}{r^x}$ . What is the value of ‘x’?

Q. Dipole-dipole interaction energy between polar molecules in solids depends on the radius of the molecule $\left(r\right)$ and it is directly proportional to:

Q. The intermolecular forces operating between two constituent particles depends on the distance between the centres of the molecules. Dipole-dipole interactions are inversely proportional to $3^{rd}$ power of the distance whereas dipole-induced dipole interaction are inversely proportional to the sixth power of intermolecular distances.
In which of the following the extent of interaction is proportional to $\frac{1}{r^6}$ where ($r=$ intermolecular distance)?

Q. The intermolecular forces operating between two constituent particles depends on the distance between the centres of the molecules. Dipole-dipole interactions are inversely proportional to $3^{rd}$ power of the distance whereas dipole-induced dipole interaction are inversely proportional to the sixth power of intermolecular distances.
The forces in dry ice are proportional to: (r= intermolecular distance)

Q. Which of the following factors influences the Dipole-induced dipole interaction between a electrically neutral molecule and a polar molecule