Rubidium-83m

Properties and data of the isotope ^83mRb.

Contents

See also: List of individual Rubidium isotopes (and general data sources).

General data

Name of the isotope:Rubidium-83m; Rb-83mSymbol:^83mRb or 83m37RbMass number A:83 (= number of nucleons)Atomic number Z:37 (= number of protons)Neutrons N:46Isotopic mass:82.9151142(25) u (atomic weight of Rubidium-83m)
Excitation energy: 42.078(2) keVNuclide mass:82.8948175 u (calculated nuclear mass without electrons)Mass excess:-79.07061 MeVMass defect:0.77299812 u (per nucleus)Nuclear binding energy:720.04311079 MeV (per nucleus)
8.6752182 MeV (average binding energy per nucleon)Half-life:0.3 msDecay constant λ:2310.4906018665 s^-1Specific activity α:1.696841446341 × 10⁺²⁵ Bq g^-1
4.586057963085 × 10⁺¹⁴ Ci g^-1Spin and parity:
(nuclear angular momentum)9/2+

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
⁸³Rb		86.2(1) d	5/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 46) and isobaric (same nucleon number A = 83) with Rubidium-83m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 46	Isobar A = 83
25	⁷¹Mn
26	⁷²Fe
27	⁷³Co
28	⁷⁴Ni
29	⁷⁵Cu
30	⁷⁶Zn	⁸³Zn
31	⁷⁷Ga	⁸³Ga
32	⁷⁸Ge	⁸³Ge
33	⁷⁹As	⁸³As
34	⁸⁰Se	⁸³Se
35	⁸¹Br	⁸³Br
36	⁸²Kr	⁸³Kr
37	⁸³Rb	⁸³Rb
38	⁸⁴Sr	⁸³Sr
39	⁸⁵Y	⁸³Y
40	⁸⁶Zr	⁸³Zr
41	⁸⁷Nb	⁸³Nb
42	⁸⁸Mo	⁸³Mo
43	⁸⁹Tc
44	⁹⁰Ru
45	⁹¹Rh
46	⁹²Pd
47	⁹³Ag
48	⁹⁴Cd