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2.65 Å
2.38 Å
2.12 Å
1.91 Å
1.80 Å
1.69 Å
1.59 Å
1.53 Å
1.48 Å
1.43 Å
1.38 Å
1.32 Å
Re = 1.29 Å

HCl has 18 electrons

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Note: In the animations the potential curves are neither accurate nor to scale.
They mearly provide a guide for the relative energies of the images.