Praseodymium-151

Properties and data of the isotope ¹⁵¹Pr.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: list of Praseodymium isotopes.

General data

Name of the isotope:Praseodymium-151; Pr-151Symbol:¹⁵¹Pr or 15159PrMass number A:151 (= number of nucleons)Atomic number Z:59 (= number of protons)Neutrons N:92Isotopic mass:150.928309(13) u (atomic weight of Praseodymium-151)Nuclide mass:150.8959452 u (calculated nuclear mass without electrons)Mass excess:-66.77974 MeVMass defect:1.33054016 u (per nucleus)Nuclear binding energy:1239.3901758 MeV (per nucleus)
8.20788196 MeV (average binding energy per nucleon)Separation energy:S_N = 6.550(15) MeV (first neutron)
S_P = 9.222(17) MeV (first proton)Half-life:18.90(7) sDecay constant λ:0.036674453997881 s^-1Specific activity α:1.472391519576 × 10⁺²⁰ Bq g^-1
3979436539.3965 Ci g^-1Spin and parity:
(nuclear angular momentum)(3/2-)Year of discovery:1990

Radioactive Decay

Half-life T_½ = 18.90(7) s respectively 1.890 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁵¹Nd	100 %	4.163(12) MeV

Parent Nuclides

Direct parent isotope is: ¹⁵¹Ce.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 92) and isobaric (same nucleon number A = 151) with Praseodymium-151. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 92	Isobar A = 151
53	¹⁴⁵I
54	¹⁴⁶Xe
55	¹⁴⁷Cs	¹⁵¹Cs
56	¹⁴⁸Ba	¹⁵¹Ba
57	¹⁴⁹La	¹⁵¹La
58	¹⁵⁰Ce	¹⁵¹Ce
59	¹⁵¹Pr	¹⁵¹Pr
60	¹⁵²Nd	¹⁵¹Nd
61	¹⁵³Pm	¹⁵¹Pm
62	¹⁵⁴Sm	¹⁵¹Sm
63	¹⁵⁵Eu	¹⁵¹Eu
64	¹⁵⁶Gd	¹⁵¹Gd
65	¹⁵⁷Tb	¹⁵¹Tb
66	¹⁵⁸Dy	¹⁵¹Dy
67	¹⁵⁹Ho	¹⁵¹Ho
68	¹⁶⁰Er	¹⁵¹Er
69	¹⁶¹Tm	¹⁵¹Tm
70	¹⁶²Yb	¹⁵¹Yb
71	¹⁶³Lu	¹⁵¹Lu
72	¹⁶⁴Hf
73	¹⁶⁵Ta
74	¹⁶⁶W
75	¹⁶⁷Re
76	¹⁶⁸Os
77	¹⁶⁹Ir
78	¹⁷⁰Pt
79	¹⁷¹Au
80	¹⁷²Hg