Erbium-176

Properties and data of the isotope ¹⁷⁶Er.

Content

General data

Name of the isotope:Erbium-176; Er-176Symbol:¹⁷⁶Er or 17668ErMass number A:176 (= number of nucleons)Atomic number Z:68 (= number of protons)Neutrons N:108Isotopic mass:175.94994(43) u (atomic weight of Erbium-176)Nuclide mass:175.9126399 u (calculated nuclear mass without electrons)Mass excess:-46.63059 MeVMass defect:1.517973104 u (per nucleus)Nuclear binding energy:1413.98283854 MeV (per nucleus)
8.0339934 MeV (average binding energy per nucleon)Separation energy:S_N = 6.05(57) MeV (first neutron)
S_P = 10.72(57) MeV (first proton)Half-life:160 nsDecay constant λ:4332169.8784997 s^-1Specific activity α:1.490796413571 × 10⁺²⁸ Bq g^-1
4.029179496138 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2012

Radioactive Decay

Half-life T_½ = 160 ns respectively 1.6 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁷⁶Tm	100 %	2.74(41) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 108) and isobaric (same nucleon number A = 176) with Erbium-176. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 108	Isobar A = 176
66	¹⁷⁴Dy
67	¹⁷⁵Ho
68	¹⁷⁶Er	¹⁷⁶Er
69	¹⁷⁷Tm	¹⁷⁶Tm
70	¹⁷⁸Yb	¹⁷⁶Yb
71	¹⁷⁹Lu	¹⁷⁶Lu
72	¹⁸⁰Hf	¹⁷⁶Hf
73	¹⁸¹Ta	¹⁷⁶Ta
74	¹⁸²W	¹⁷⁶W
75	¹⁸³Re	¹⁷⁶Re
76	¹⁸⁴Os	¹⁷⁶Os
77	¹⁸⁵Ir	¹⁷⁶Ir
78	¹⁸⁶Pt	¹⁷⁶Pt
79	¹⁸⁷Au	¹⁷⁶Au
80	¹⁸⁸Hg	¹⁷⁶Hg
81	¹⁸⁹Tl	¹⁷⁶Tl
82	¹⁹⁰Pb
83	¹⁹¹Bi
84	¹⁹²Po
85	¹⁹³At
86	¹⁹⁴Rn