| elements | H (1) | Li (3) | Na (11) | K (19) | Rb (37) | Cs (55) | Fr (87) |
| nuclear mass (u) | 1.0079400E+00 | 6.9400000E+00 | 2.2989769E+01 | 3.9098300E+01 | 8.5467800E+01 | 1.3290545E+02 | 2.2300000E+02 |
| total orbital’s energy levels (MeV) | 0.5104115 | 1.5312345 | 5.6145265 | 9.6978185 | 18.8852255 | 28.0726325 | 44.4058005 |