We present the total energies expressed in a.u (hartree) units for some atoms in neutral and excited states. To compare results, we give other values in the link at the end.
------ Hydrogen atom ----------
Property from H1504.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 1.00 -0.5002 0.5003 1.0005 1.4994
Energy Summary
kinetic energy = 0.5003
potential energy = -1.0005
one-electron energy = -0.5001
two-electron energy = 0.0000
total energy = -0.5002
virial ratio = -1.9996
---- Helium atom-----------
Property from He1505.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 2.00 -0.8998 1.5175 1.7352 0.9133
Energy Summary
kinetic energy = 3.0349
potential energy = -5.8876
one-electron energy = -3.9058
two-electron energy = 1.0531
total energy = -2.8527
virial ratio = -1.9399
------------- Helium ion He+ -----------
Property from He1510.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 1.00 -2.0007 2.0010 2.0007 0.7497
Energy Summary
kinetic energy = 2.0010
potential energy = -4.0016
one-electron energy = -2.0005
two-electron energy = -0.0001
total energy = -2.0006
virial ratio = -1.9998
------ Lithium atom-------------
Property from Li1506.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 2.00 -2.2989 3.9238 2.7994 0.5490
2s 1.00 -0.2044 0.2483 0.3695 3.7083
Energy Summary
kinetic energy = 8.0959
potential energy = -15.4017
one-electron energy = -9.8094
two-electron energy = 2.5036
total energy = -7.3058
virial ratio = -1.9024
--------- Lithium ion Li+ --------------
Property from Li1512.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 2.00 -2.7669 3.7450 2.7329 0.5669
Energy Summary
kinetic energy = 7.4900
potential energy = -14.7107
one-electron energy = -8.9076
two-electron energy = 1.6868
total energy = -7.2207
virial ratio = -1.9640
---------- Berylium atom ------------
Property from Be1507.out
Orbital Summary
nl occ E KE <1/r> <r>
1s 2.00 -4.4723 7.1742 3.7866 0.4037
2s 2.00 -0.3162 0.6097 0.5653 2.5256
Energy Summary
kinetic energy = 15.5680
potential energy = -29.9799
one-electron energy = -19.2467
two-electron energy = 4.8348
total energy = -14.4119
virial ratio = -1.9257
Link for comparaison
https://www.nist.gov/pml/data/atomic-total-energies-and-eigenvalues-html
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