Erbium-175

Properties and data of the isotope ¹⁷⁵Er.

Content

General data

Name of the isotope:Erbium-175; Er-175Symbol:¹⁷⁵Er or 17568ErMass number A:175 (= number of nucleons)Atomic number Z:68 (= number of protons)Neutrons N:107Isotopic mass:174.94777(43) u (atomic weight of Erbium-175)Nuclide mass:174.9104699 u (calculated nuclear mass without electrons)Mass excess:-48.65193 MeVMass defect:1.511478188 u (per nucleus)Nuclear binding energy:1407.93286325 MeV (per nucleus)
8.04533065 MeV (average binding energy per nucleon)Separation energy:S_N = 4.77(50) MeV (first neutron)
S_P = 10.25(50) MeV (first proton)Half-life:1.2(3) minDecay constant λ:0.0096270441744437 s^-1Specific activity α:3.331920464559 × 10⁺¹⁹ Bq g^-1
900519044.47551 Ci g^-1Spin and parity:
(nuclear angular momentum)(9/2+)Year of discovery:1996

Radioactive Decay

Half-life T_½ = 1.2(3) min (minutes) respectively 7.2 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁷⁵Tm	100 %	3.66(40) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 107) and isobaric (same nucleon number A = 175) with Erbium-175. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 107	Isobar A = 175
65	¹⁷²Tb
66	¹⁷³Dy
67	¹⁷⁴Ho	¹⁷⁵Ho
68	¹⁷⁵Er	¹⁷⁵Er
69	¹⁷⁶Tm	¹⁷⁵Tm
70	¹⁷⁷Yb	¹⁷⁵Yb
71	¹⁷⁸Lu	¹⁷⁵Lu
72	¹⁷⁹Hf	¹⁷⁵Hf
73	¹⁸⁰Ta	¹⁷⁵Ta
74	¹⁸¹W	¹⁷⁵W
75	¹⁸²Re	¹⁷⁵Re
76	¹⁸³Os	¹⁷⁵Os
77	¹⁸⁴Ir	¹⁷⁵Ir
78	¹⁸⁵Pt	¹⁷⁵Pt
79	¹⁸⁶Au	¹⁷⁵Au
80	¹⁸⁷Hg	¹⁷⁵Hg
81	¹⁸⁸Tl
82	¹⁸⁹Pb
83	¹⁹⁰Bi
84	¹⁹¹Po
85	¹⁹²At
86	¹⁹³Rn