Potential Energy Well and Atomic Radius
The depth of the potential energy well for diatomic molecules of Group 17 elements (X₂) decreases as atomic size increases down the group. Which of the following relationships best explains this trend?
A
PE ∝ r², as r increases, bond strength increases
B
PE ∝ r, as r increases, electron density increases
C
PE ∝ 1/r², as r increases, nuclear attraction increases
D
PE ∝ 1/r, as r increases, orbital overlap decreases
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