Atomic number: 60 Symbol: Nd
Average atomic weight: 144.242(3) u
| Isotope | Fraction | Atomic weight/u |
| 142 | 0.272(5) | 141.9077233(25) |
| 143 | 0.122(2) | 142.9098143(25) |
| 144 | 0.238(3) | 143.9100873(25) |
| 145 | 0.083(1) | 144.9125736(25) |
| 146 | 0.172(3) | 145.9131169(25) |
| 148 | 0.057(1) | 147.916893(3) |
| 150 | 0.056(2) | 149.920891(3) |
Atomic weights and isotopic compositions were obtained from NIST Database 144
(Atomic Line List 2.05b16, compiled on Jan 13, 2012)