Rubidium-88
Properties and data of the isotope 88Rb.
See also: List of individual Rubidium isotopes (and general data sources).
General data
Name of the isotope:Rubidium-88; Rb-88Symbol:88Rb or 8837RbMass number A:88 (= number of nucleons)Atomic number Z:37 (= number of protons)Neutrons N:51Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.3783783783784 (= neutron-proton ratio)Neutron excess (N-Z):14Isotopic mass:87.91131559(17) u (atomic weight of Rubidium-88)Nuclide mass:87.8910189 u (calculated nuclear mass without electrons)Mass excess:-82.609 MeVMass defect:0.82012131 u (per nucleus)Nuclear binding energy:763.93807954 MeV (per nucleus)
8.68111454 MeV (average binding energy per nucleon)Separation energy:SN = 6.08252(16) MeV (first neutron)
SP = 9.18844(28) MeV (first proton)Half-life:17.773(11) minDecay constant λ:0.00065000016932045 s-1Specific activity α:4.499301814517 × 10+18 Bq g-1
121602751.74372 Ci g-1Spin and parity:
(nuclear angular momentum)2-Magnetic dipole moment:μ(μN) = 0.50751(2)Quadrupole moment Q:- 0.01 barn (100 fm2)Nuclear g-factor:gl = 0.253755Charge radius:4.2170(38) femtometer fmYear of discovery:1939
Radioactive Decay
Half-life T½ = 17.773(11) min (minutes) respectively 1.06638 × 103 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 88Sr | 100 % | 5.31262(16) MeV | |
Parent Nuclides
Direct parent isotope is: 88Kr.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 51) and isobaric (same nucleon number A = 88) with Rubidium-88. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 51 | Isobar A = 88 |
|---|
| 28 | 79Ni | |
| 29 | 80Cu | |
| 30 | 81Zn | |
| 31 | 82Ga | |
| 32 | 83Ge | 88Ge |
| 33 | 84As | 88As |
| 34 | 85Se | 88Se |
| 35 | 86Br | 88Br |
| 36 | 87Kr | 88Kr |
| 37 | 88Rb | 88Rb |
| 38 | 89Sr | 88Sr |
| 39 | 90Y | 88Y |
| 40 | 91Zr | 88Zr |
| 41 | 92Nb | 88Nb |
| 42 | 93Mo | 88Mo |
| 43 | 94Tc | 88Tc |
| 44 | 95Ru | 88Ru |
| 45 | 96Rh | |
| 46 | 97Pd | |
| 47 | 98Ag | |
| 48 | 99Cd | |
| 49 | 100In | |
| 50 | 101Sn | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/rubidium-88
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