Question

The potential energy $U$ of two atoms of a diatomic molecule as a function of distance $r$ between the atoms are shown in the given figure. Read the following statements carefully. 1. The equilibrium separation distance between the atoms is equal to $r_{2}$. 2. At $r=r_{1}$, the force between the atom is repulsive. 3. For $r>r_{2}$, the force between the atoms is attractive. Which of the above statements is true?

• A. 1 only
• B. 2 only
• C. 3 only
• D. 2 and 3

Answer 1

Answer: (D)

2 and 3

Answer 2

Answer (d) 2 and 3