element | First ionization energy | Second ionization energy | ||
experiment value [15] | calculated value | experiment value [15] | calculated value | |
Zn | 0.9064 | 0.9099 | 1.7333 | 1.7738 |
Cu | 0.7455 | 0.7756 | 1.9579 | 2.0077 |
Ni | 0.7367 | 0.7628 | 1.753 | 1.8068 |
Fe | 0.7594 | 0.7212 | 1.561 | 1.5906 |
Co | 0.758 | 0.7448 | 1.646 | 1.74336 |
Sc | 0.631 | 0.6245 | 1.235 | 1.2682 |
Ti | 0.658 | 0.6377 | 1.31 | 1.3573 |
Cr | 0.6528 | 0.6784 | 1.496 | 1.6349 |
Mn | 0.7174 | 0.7258 | 1.5091 | 1.5341 |