Question

draw a potential energy diagram for an bond that has a longer bond length and lower bond energy than h - h.

Explanation:

Step1: Understand bond - energy and bond - length relationship

The minimum of the potential - energy curve corresponds to the bond length, and the energy difference between the minimum and the separated atoms is the bond energy.

Step2: Modify the curve for new bond

For a bond with longer bond length and lower bond energy than H - H: The minimum of the new potential - energy curve should be at a greater distance (on the x - axis representing internuclear distance) compared to the H - H bond length (74 pm), and the depth of the well (difference between minimum and separated atoms energy) should be less than that of the H - H bond. Sketch a curve similar in shape to the H - H curve but with the mentioned adjustments.

Answer:

Sketch a potential - energy curve with the minimum at a distance greater than 74 pm and with a lower bond - energy value (smaller energy difference between minimum and separated atoms) compared to the H - H bond potential - energy curve provided.