# Simplified Hartree-Fock Computations on Second-Row Atoms

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Modern computational quantum chemistry has developed largely from applications of the Hartree–Fock method to atoms and molecules [1–3]. A simple representation of a many-electron atom is given by a Slater determinant constructed from occupied spin-orbitals:

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Contributed by: S. M. Blinder (October 2017)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Following are results for optimized functions , and . For comparison we also include results from the best Hartree-Fock computations and the exact atomic ground-state energies.

References

[1] S. M. Blinder, "Simplified Hartree-Fock Computations on Second-Row Atoms," https://arxiv.org/abs/2105.07018

[2] A. Szabo and N. S. Ostlund, *Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory,* Mineola, NY: Dover, 1996.

[3] S. M. Blinder, "Introduction to the Hartree–Fock Method," in *Mathematical Physics in Theoretical Chemistry* (S. M. Blinder and J. E. House, eds.), Elsevier, 2018.

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