The potential energy curve for interaction between two molecules is shown in figure. Which of the following statements are true?

Options

A. (a) The molecules have maximum attraction for `r=OA`.

B. (b) The molecules have maximum kinetic energy for `r=OB`.
C. (c) The intermolecular force is zero for `r=OB`.
D. (d) For the gaseous state, the depth BD of the potential energy curve is much smaller that KT.

Answer

B, C, D

Explanation

a. False, it is repulsion here.
b. True, since minimum potential energy means maximum kinetic energy.
c. True, since slope gives force and it is zero here.
d. True, since a well `gt gt KT`, would mean molecules staying together.