See also: List of individual Neodymium isotopes (and general data sources).
General data
Name of the isotope:Neodymium-150; Nd-150Symbol:150Nd or 15060NdMass number A:150 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:90Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5 (= neutron-proton ratio)Neutron excess (N-Z):30Isotopic mass:149.92090(2) u (atomic weight of Neodymium-150)Nuclide mass:149.8879877 u (calculated nuclear mass without electrons)Mass excess:-73.68118 MeVMass defect:1.32844436 u (per nucleus)Nuclear binding energy:1237.43795067 MeV (per nucleus) 8.24958634 MeV (average binding energy per nucleon)Separation energy:SN = 7.3756(19) MeV (first neutron) SP = 9.929(10) MeV (first proton)Half-life:6.7(7) × 1018 yearsDecay constant λ:3.280530285028 × 10-27 s-1Specific activity α:1.317749236022 × 10-5 Bq g-1 3.561484421682 × 10-16 Ci g-1Spin and parity: (nuclear angular momentum)0+Charge radius:5.0400(44) femtometer fmYear of discovery:1937
Radioactive Decay
Half-life T½ = 6.7(7) × 1018 years respectively 2.112912 × 1026 seconds s.
Comparison of the natural Neodymium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
Atomic Mass ma
Quantity
Half-life
Spin
Neodymium Isotopic mixture
144.242 u
100 %
Isotope 142Nd
141.90773(2) u
27.153(40) %
stable
0+
Isotope 143Nd
142.90982(2) u
12.173(26) %
stable
7/2-
Isotope 144Nd
143.9100928(13) u
23.798(19) %
2.29(16) × 1015 years
0+
Isotope 145Nd
144.91258(2) u
8.293(12) %
stable
7/2-
Isotope 146Nd
145.91312(2) u
17.189(32) % [17.06-17.35 %]
stable
0+
Isotope 148Nd
147.91690(2) u
5.756(21) %
stable
0+
Isotope 150Nd
149.92090(2) u
5.638(28) %
6.7(7) × 1018 years
0+
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 90) and isobaric (same nucleon number A = 150) with Neodymium-150. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
