The potential energy function for the force between two atoms in a diatomic molecule is approximately given by U(x) = a/x^{12}-b/x^6 where a and b are constants and x is the distance between the atoms. If the dissociation energy of the molecule is D = [U(x = ∞) − U_{\at \equilibrium}]. D is

JEE Mains Model Paper 9

Question : 20 of 90

Marks: +1, -0

The potential energy function for the force between two atoms in a diatomic molecule is approximately given by U(x) =

x12

−

where a and b are constants and x is the distance between the atoms. If the dissociation energy of the molecule is
D = [U(x = ∞) − Uat‌equilibrium]. D is

b2
2a
b2
21a
b2
4a
b2
6a

Validate

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