Figure 4. Contour representation of the spatial part of the two-electron wavefunction considered here (left) and their absolute square (right). The top row refers to the singlet state, the lower one to the triplet one

From

Visualizing the Origin of the Exchange Energy

Surusch Djalali, Amitabh Banerji, Martin Kleinschmidt, Peter Gilch, Lena Halbrügge

World Journal of Chemical Education. 2023, 11(4), 141-148 doi:10.12691/wjce-11-4-3