Erbium-162
Properties and data of the isotope 162Er.
See also: list of Erbium isotopes.
General data
Name of the isotope:Erbium-162; Er-162Symbol:162Er or 16268ErMass number A:162 (= number of nucleons)Atomic number Z:68 (= number of protons)Neutrons N:94Isotopic mass:161.92879(2) u (atomic weight of Erbium-162)Nuclide mass:161.8914899 u (calculated nuclear mass without electrons)Mass excess:-66.33169 MeVMass defect:1.41781428 u (per nucleus)Nuclear binding energy:1320.68549493 MeV (per nucleus)
8.1523796 MeV (average binding energy per nucleon)Separation energy:SN = 9.204(9) MeV (first neutron)
SP = 6.4262(22) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.2246(40) femtometer fmYear of discovery:1938
Parent Nuclides
Direct parent isotope is: 162Tm.
Occurrence
Comparison of the natural Erbium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
| Atomic Mass ma | Quantity | Half-life | Spin |
---|
Erbium Isotopic mixture | 167.259 u | 100 % | | |
Isotope 162Er | 161.92879(2) u | 0.139(5) % | stable | 0+ |
Isotope 164Er | 163.92921(2) u | 1.601(3) % | stable | 0+ |
Isotope 166Er | 165.93030(2) u | 33.503(36) % | stable | 0+ |
Isotope 167Er | 166.93205(2) u | 22.869(9) % | stable | 7/2+ |
Isotope 168Er | 167.93238(2) u | 26.978(18) % | stable | 0+ |
Isotope 170Er | 169.93547(2) u | 14.910(36) % | stable | 0+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 94) and isobaric (same nucleon number A = 162) with Erbium-162. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 94 | Isobar A = 162 |
54 | 148Xe | |
55 | 149Cs | |
56 | 150Ba | |
57 | 151La | |
58 | 152Ce | |
59 | 153Pr | |
60 | 154Nd | 162Nd |
61 | 155Pm | 162Pm |
62 | 156Sm | 162Sm |
63 | 157Eu | 162Eu |
64 | 158Gd | 162Gd |
65 | 159Tb | 162Tb |
66 | 160Dy | 162Dy |
67 | 161Ho | 162Ho |
68 | 162Er | 162Er |
69 | 163Tm | 162Tm |
70 | 164Yb | 162Yb |
71 | 165Lu | 162Lu |
72 | 166Hf | 162Hf |
73 | 167Ta | 162Ta |
74 | 168W | 162W |
75 | 169Re | 162Re |
76 | 170Os | 162Os |
77 | 171Ir | |
78 | 172Pt | |
79 | 173Au | |
80 | 174Hg | |
External data and identifiers
Last update: 2020-10-09
Perma link: https://www.chemlin.org/isotope/erbium-162
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