Average atomic weight: 22.98976928(2) u
| Isotope | Fraction | Atomic weight/u |
| 23 | 1(0) | 22.9897692820(19) |
Atomic weights and isotopic compositions were obtained from NIST Database 144
Na I (Na-like): 342 levels, 15970 lines (E1: 15796 IC: 174), transition probabilities for 11980 lines
Na II (Ne-like): 158 levels, 2346 lines (E1: 2059 IC: 283 M1: 2 E2: 1 M2: 1), transition probabilities for 146 lines
Na III (F -like): 113 levels, 1632 lines (E1: 1117 IC: 513 M1: 1 E2: 1), transition probabilities for 803 lines
Na IV (O -like): 102 levels, 1121 lines (E1: 619 IC: 490 M1: 5 E2: 7), transition probabilities for 918 lines
Na V (N -like): 94 levels, 1375 lines (E1: 607 IC: 753 M1: 7 E2: 8), transition probabilities for 756 lines
Na VI (C -like): 111 levels, 1606 lines (E1: 981 IC: 613 M1: 5 E2: 7), transition probabilities for 1078 lines
Na VII (B -like): 134 levels, 1770 lines (E1: 1713 IC: 50 M1: 3 E2: 4), transition probabilities for 1722 lines
Na VIII (Be-like): 75 levels, 546 lines (E1: 538 IC: 4 M1: 2 E2: 2), transition probabilities for 489 lines
Na IX (Li-like): 44 levels, 371 lines (E1: 289 IC: 82), transition probabilities for 145 lines
Na X (He-like): 93 levels, 1277 lines (E1: 817 IC: 459 M2: 1), transition probabilities for 661 lines
Na XI (H -like): 225 levels, 3017 lines (E1: 3017), transition probabilities for 3017 lines
(Atomic Line List v3.00b5)
