Arsenic-66m2
Properties and data of the isotope 66As.
See also: list of Arsenic isotopes.
General data
Name of the isotope:Arsenic-66m2; As-66m2Symbol:66As or 6633AsMass number A:66 (= number of nucleons)Atomic number Z:33 (= number of protons)Neutrons N:33Isotopic mass:65.944149(6) u (atomic weight of Arsenic-66m2)
Excitation energy: 3023.8(3) keVNuclide mass:65.9260465 u (calculated nuclear mass without electrons)Mass excess:-52.02487 MeVMass defect:0.600019284 u (per nucleus)Nuclear binding energy:558.91436293 MeV (per nucleus)
8.46839944 MeV (average binding energy per nucleon)Half-life:8.2Decay constant λ:84530.143970725 s-1Specific activity α:7.831575906191 × 10+26 Bq g-1
2.116642136808 × 10+16 Ci g-1Spin and parity:
(nuclear angular momentum)(9+)
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
Nuclear Isomer | Excitation Energy | Half-life | Spin |
---|
66As | | 95.77(23) ms | (0+) |
66m1As | 1356.63(17) keV | 1.1(1) μs | (5+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 33) and isobaric (same nucleon number A = 66) with Arsenic-66m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 33 | Isobar A = 66 |
16 | 49S | |
17 | 50Cl | |
18 | 51Ar | |
19 | 52K | |
20 | 53Ca | |
21 | 54Sc | |
22 | 55Ti | |
23 | 56V | 66V |
24 | 57Cr | 66Cr |
25 | 58Mn | 66Mn |
26 | 59Fe | 66Fe |
27 | 60Co | 66Co |
28 | 61Ni | 66Ni |
29 | 62Cu | 66Cu |
30 | 63Zn | 66Zn |
31 | 64Ga | 66Ga |
32 | 65Ge | 66Ge |
33 | 66As | 66As |
34 | 67Se | 66Se |
35 | 68Br | 66Br |
36 | 69Kr | |
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/arsenic-66m2
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