Calculate the non-relativistic, infinite-nuclear-mass ground-state energies, in Hartree, of: 1. the helium atom (He) 2. the hydride ion (H-) 3. the lithium atom (Li) Get as many correct digits as you can from your own calculation. Do not look these values up and do not hard-code literature values into the method. Deliver results.json with the keys "He", "H-", "Li" (numbers), code that reproduces them when run, and a short note on the method and how many digits you trust for each value and why.