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| Ion | No. of levels |
|---|
| Kr I | 528 |
| Kr II | 163 |
| Kr III | 123 |
| Kr IV | 79 |
| Kr V | 43 |
| Kr VI | 45 |
| Kr VII | 28 |
| Kr VIII | 110 |
| Kr IX | 58 |
| Kr X | 36 |
| Kr XI | 2 |
| Kr XII | 2 |
| Kr XIII | 2 |
| Kr XIV | 2 |
| Kr XV | 2 |
| Kr XVI | 2 |
| Kr XVII | 2 |
| Kr XVIII | 11 |
| Kr XIX | 4 |
| Kr XX | 8 |
| Kr XXI | 13 |
| Kr XXII | 13 |
| Kr XXIII | 17 |
| Kr XXIV | 13 |
| Kr XXV | 36 |
| Kr XXVI | 70 |
| Kr XXVII | 51 |
| Kr XXVIII | 66 |
| Kr XXIX | 14 |
| Kr XXX | 10 |
| Kr XXXI | 12 |
| Kr XXXII | 12 |
| Kr XXXIII | 11 |
| Kr XXXIV | 35 |
| Kr XXXV | 92 |
| Kr XXXVI | 50 |
| Total for Kr: | 1765 |