Average atomic weight: 83.798(2) u
| Isotope | Fraction | Atomic weight/u |
| 78 | 0.00355(3) | 77.92036494(76) |
| 80 | 0.02286(10) | 79.91637808(75) |
| 82 | 0.11593(31) | 81.91348273(94) |
| 83 | 0.11500(19) | 82.91412716(32) |
| 84 | 0.56987(15) | 83.9114977282(44) |
| 86 | 0.17279(41) | 85.9106106269(41) |
Atomic weights and isotopic compositions were obtained from NIST Database 144
Kr I (Kr-like): 493 levels, 23874 lines (E1: 21667 IC: 2204 M1: 1 E2: 1 M2: 1), transition probabilities for 184 lines
Kr II (Br-like): 162 levels, 2930 lines (E1: 2150 IC: 779 M1: 1), transition probabilities for 21 lines
Kr III (Se-like): 100 levels, 1376 lines (E1: 585 IC: 782 M1: 5 E2: 4), transition probabilities for 2 lines
Kr IV (As-like): 78 levels, 964 lines (E1: 453 IC: 501 M1: 6 E2: 4), transition probabilities for 2 lines
Kr V (Ge-like): 23 levels, 70 lines (E1: 34 IC: 27 M1: 5 E2: 4), transition probabilities for 2 lines
Kr VI (Ga-like): 21 levels, 85 lines (E1: 56 IC: 24 M1: 3 E2: 1 M2: 1), transition probabilities for 3 lines
Kr VII (Zn-like): 27 levels, 110 lines (E1: 66 IC: 40 M1: 2 E2: 1 M2: 1), transition probabilities for 2 lines
Kr VIII (Cu-like): 55 levels, 491 lines (E1: 341 IC: 150), transition probabilities for 108 lines
Kr IX (Ni-like): 7 levels, 6 lines (E1: 2 IC: 4), transition probabilities for 0 lines
Kr X (Co-like): 35 levels, 55 lines (E1: 32 IC: 22 M1: 1), transition probabilities for 1 lines
Kr XI (Fe-like): 1 levels, 0 lines
Kr XII (Mn-like): 1 levels, 0 lines
Kr XIII (Cr-like): 1 levels, 0 lines
Kr XIV (V -like): 1 levels, 0 lines
Kr XVIII (K -like): 10 levels, 14 lines (E1: 13 M1: 1), transition probabilities for 1 lines
Kr XIX (Ar-like): 3 levels, 2 lines (E1: 1 IC: 1), transition probabilities for 0 lines
Kr XX (Cl-like): 6 levels, 8 lines (E1: 7 M1: 1), transition probabilities for 1 lines
Kr XXI (S -like): 11 levels, 27 lines (E1: 9 IC: 9 M1: 5 E2: 4), transition probabilities for 2 lines
Kr XXII (P -like): 11 levels, 34 lines (E1: 13 IC: 10 M1: 7 E2: 4), transition probabilities for 3 lines
Kr XXIII (Si-like): 14 levels, 38 lines (E1: 17 IC: 12 M1: 5 E2: 4), transition probabilities for 2 lines
Kr XXIV (Al-like): 12 levels, 22 lines (E1: 12 IC: 5 M1: 3 E2: 1 M2: 1), transition probabilities for 3 lines
Kr XXV (Mg-like): 29 levels, 127 lines (E1: 65 IC: 57 M1: 2 E2: 2 M2: 1), transition probabilities for 7 lines
Kr XXVI (Na-like): 14 levels, 29 lines (E1: 29), transition probabilities for 29 lines
Kr XXVII (Ne-like): 29 levels, 102 lines (E1: 101 M2: 1), transition probabilities for 0 lines
Kr XXVIII (F -like): 28 levels, 43 lines (E1: 42 M1: 1), transition probabilities for 1 lines
Kr XXIX (O -like): 8 levels, 18 lines (E1: 7 IC: 5 M1: 4 E2: 2), transition probabilities for 3 lines
Kr XXX (N -like): 9 levels, 24 lines (E1: 9 IC: 9 M1: 4 E2: 2), transition probabilities for 4 lines
Kr XXXI (C -like): 10 levels, 18 lines (E1: 15 M1: 2 E2: 1), transition probabilities for 2 lines
Kr XXXII (B -like): 9 levels, 18 lines (E1: 17 M1: 1), transition probabilities for 1 lines
Kr XXXIII (Be-like): 10 levels, 20 lines (E1: 9 IC: 7 M1: 2 E2: 1 M2: 1), transition probabilities for 2 lines
Kr XXXIV (Li-like): 3 levels, 2 lines (E1: 2), transition probabilities for 2 lines
Kr XXXV (He-like): 7 levels, 7 lines (E1: 5 IC: 2), transition probabilities for 4 lines
Kr XXXVI (H -like): 100 levels, 920 lines (E1: 920), transition probabilities for 920 lines
(Atomic Line List v3.00b5)
