Gallium-70
Properties and data of the isotope 70Ga.
See also: list of Gallium isotopes.
General data
Name of the isotope:Gallium-70; Ga-70Symbol:70Ga or 7031GaMass number A:70 (= number of nucleons)Atomic number Z:31 (= number of protons)Neutrons N:39Isotopic mass:69.9260219(13) u (atomic weight of Gallium-70)Nuclide mass:69.9090165 u (calculated nuclear mass without electrons)Mass excess:-68.91016 MeVMass defect:0.654485816 u (per nucleus)Nuclear binding energy:609.64961069 MeV (per nucleus)
8.70928015 MeV (average binding energy per nucleon)Separation energy:SN = 7.65365(17) MeV (first neutron)
SP = 7.7813(14) MeV (first proton)Half-life:21.14(3) minDecay constant λ:0.0005464736522863 s-1Specific activity α:4.769480159872 × 10+18 Bq g-1
128904869.18575 Ci g-1Spin and parity:
(nuclear angular momentum)1+Magnetic dipole moment:μ(μN) = +0.571(2)Quadrupole moment Q:+0.105(7) barn (100 fm2)Nuclear g-factor:gl = 0.571Year of discovery:1937
Radioactive Decay
Half-life T½ = 21.14(3) min (minutes) respectively 1.2684 × 103 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EC | 70Zn | 0.41(5) % | 0.6546(23) MeV | |
β- | 70Ge | 99.59(5) % | 1.6517(15) MeV | |
Parent Nuclides
Direct parent isotopes are: 70Ge, 70Zn.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 39) and isobaric (same nucleon number A = 70) with Gallium-70. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 39 | Isobar A = 70 |
21 | 60Sc | |
22 | 61Ti | |
23 | 62V | |
24 | 63Cr | |
25 | 64Mn | 70Mn |
26 | 65Fe | 70Fe |
27 | 66Co | 70Co |
28 | 67Ni | 70Ni |
29 | 68Cu | 70Cu |
30 | 69Zn | 70Zn |
31 | 70Ga | 70Ga |
32 | 71Ge | 70Ge |
33 | 72As | 70As |
34 | 73Se | 70Se |
35 | 74Br | 70Br |
36 | 75Kr | 70Kr |
37 | 76Rb | |
38 | 77Sr | |
39 | 78Y | |
40 | 79Zr | |
42 | 81Mo | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/gallium-70
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