The graph below shows the potential energy as a function of internuclear distance for molecular bromine,

, and an unknown heteronuclear diatomic molecule,

.
A graph shows potential energy (k J/mol) on the y-axis and internuclear distance on the x-axis. A curve for B r 2 begins near the top of the y-axis and 1/5 of the way from the origin of the x-axis. The curve drops rapidly, crosses the x-axis, and hits a minimum 1/2 of the way below the x-axis. The curve slowly rises until it ends just below the x-axis. The curve for A B is similar to that of B r 2 except that it begins a little to the right of the B r 2 curve and it reaches a minimum value that is nearer the x-axis.



A graph shows potential energy (k J/mol) on the y-axis and internuclear distance on the x-axis. A curve for B r 2 begins near the top of the y-axis and 1/5 of the way from the origin of the x-axis. The curve drops rapidly, crosses the x-axis, and hits a minimum 1/2 of the way below the x-axis. The curve slowly rises until it ends just below the x-axis. The curve for A B is similar to that of B r 2 except that it begins a little to the right of the B r 2 curve and it reaches a minimum value that is nearer the x-axis.
Based on the data in the graph, which of the following correctly identifies the diatomic molecule

?
Choose 1 answer:
Choose 1 answer:
(Choice A) Hydrogen chloride,


A
Hydrogen chloride,

(Choice B) Carbon monoxide,


B
Carbon monoxide,

(Choice C) Sulfur monoxide,


C
Sulfur monoxide,

(Choice D) Iodine monobromide,


D
Iodine monobromide,