The final one-electron matrix is printed out. This matrix is composed
of atomic orbitals; the array element between orbitals
*φ*_{λ}and
*φ*_{σ}
on different atoms is given by:

The matrix elements between orbitals *φ*_{λ}and
*φ*_{σ}
on the same atom are calculated from the
electron-nuclear attraction energy, and also from the
*U*_{λλ} value if
*λ = σ*.

The one-electron matrix is unaffected by (a) the charge and (b) the electron
density. It is only a function of the geometry. Abbreviation: `1ELEC`.