Erbium-150

Properties and data of the isotope ¹⁵⁰Er.

Content

General data

Name of the isotope:Erbium-150; Er-150Symbol:¹⁵⁰Er or 15068ErMass number A:150 (= number of nucleons)Atomic number Z:68 (= number of protons)Neutrons N:82Isotopic mass:149.937916(18) u (atomic weight of Erbium-150)Nuclide mass:149.9006159 u (calculated nuclear mass without electrons)Mass excess:-57.83087 MeVMass defect:1.304709288 u (per nucleus)Nuclear binding energy:1215.32887352 MeV (per nucleus)
8.10219249 MeV (average binding energy per nucleon)Separation energy:S_N = 12.16(3) MeV (first neutron)
S_P = 3.474(21) MeV (first proton)Half-life:18.5(7) sDecay constant λ:0.037467415165402 s^-1Specific activity α:1.514322495193 × 10⁺²⁰ Bq g^-1
4092763500.5222 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:5.0548(254) femtometer fmYear of discovery:1982

Radioactive Decay

Half-life T_½ = 18.5(7) s respectively 1.85 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁵⁰Ho	100 %	4.115(22) MeV

Parent Nuclides

Direct parent isotopes are: ¹⁵⁰Tm, ¹⁵¹Yb, ¹⁵⁴Yb.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 82) and isobaric (same nucleon number A = 150) with Erbium-150. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 82	Isobar A = 150
45	¹²⁷Rh
46	¹²⁸Pd
47	¹²⁹Ag
48	¹³⁰Cd
49	¹³¹In
50	¹³²Sn
51	¹³³Sb
52	¹³⁴Te
53	¹³⁵I
54	¹³⁶Xe
55	¹³⁷Cs	¹⁵⁰Cs
56	¹³⁸Ba	¹⁵⁰Ba
57	¹³⁹La	¹⁵⁰La
58	¹⁴⁰Ce	¹⁵⁰Ce
59	¹⁴¹Pr	¹⁵⁰Pr
60	¹⁴²Nd	¹⁵⁰Nd
61	¹⁴³Pm	¹⁵⁰Pm
62	¹⁴⁴Sm	¹⁵⁰Sm
63	¹⁴⁵Eu	¹⁵⁰Eu
64	¹⁴⁶Gd	¹⁵⁰Gd
65	¹⁴⁷Tb	¹⁵⁰Tb
66	¹⁴⁸Dy	¹⁵⁰Dy
67	¹⁴⁹Ho	¹⁵⁰Ho
68	¹⁵⁰Er	¹⁵⁰Er
69	¹⁵¹Tm	¹⁵⁰Tm
70	¹⁵²Yb	¹⁵⁰Yb
71	¹⁵³Lu	¹⁵⁰Lu
72	¹⁵⁴Hf
73	¹⁵⁵Ta