Krypton-83

Properties and data of the isotope ⁸³Kr.

Contents

General data

Name of the isotope:Krypton-83; Kr-83Symbol:⁸³Kr or 8336KrMass number A:83 (= number of nucleons)Atomic number Z:36 (= number of protons)Neutrons N:47Isotopic mass:82.914127(2) u (atomic weight of Krypton-83)Nuclide mass:82.8943789 u (calculated nuclear mass without electrons)Mass excess:-79.99018 MeVMass defect:0.77482520400001 u (per nucleus)Nuclear binding energy:721.74502857 MeV (per nucleus)
8.69572324 MeV (average binding energy per nucleon)Separation energy:S_N = 7.47017(1) MeV (first neutron)
S_P = 9.7809(10) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)9/2+Magnetic dipole moment:μ(μ_N) = -0.970730(3)Charge radius:4.1871(23) femtometer fmYear of discovery:1920

Parent Nuclides

Direct parent isotopes are: ⁸³Rb, ⁸³Br.

Occurrence

Comparison of the natural Krypton isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Krypton Isotopic mixture	83.798 u	100 %
Isotope ⁷⁸Kr	77.920365(5) u	0.355(3) %	stable	0+
Isotope ⁸⁰Kr	79.916378(5) u	2.286(10) %	stable	0+
Isotope ⁸²Kr	81.913483(6) u	11.593(31) %	stable	0+
Isotope ⁸³Kr	82.914127(2) u	11.500(19) %	stable	9/2+
Isotope ⁸⁴Kr	83.91149773(3) u	56.987(15) %	stable	0+
Isotope ⁸⁶Kr	85.91061063(3) u	17.279(41) %	stable	0+

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁸³Kr

Isotope:⁸³Kr-NMRQuantity:11.500(19) %Spin:9/2+Nuclearmagnetic moment
μ/μ_N:-0.970730(3)Gyromagnetic ratio γ:1.0331 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = -0.21571777777778Quadrupole moment Q:+ 0.259(1) barn (100 fm²)Resonance frequency:v₀ = 1.6442 at 1 TRelative Sensitivity:0.00190 (H₀ = const.)
1.2744 (v₀ = const.)
[related to ¹H = 1.000]

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
^83m1Kr	9.4057(6) keV	156.8(5) ns	7/2+
^83m2Kr	41.5575(7) keV	1.83(2) h	1/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 47) and isobaric (same nucleon number A = 83) with Krypton-83. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 47	Isobar A = 83
26	⁷³Fe
27	⁷⁴Co
28	⁷⁵Ni
29	⁷⁶Cu
30	⁷⁷Zn	⁸³Zn
31	⁷⁸Ga	⁸³Ga
32	⁷⁹Ge	⁸³Ge
33	⁸⁰As	⁸³As
34	⁸¹Se	⁸³Se
35	⁸²Br	⁸³Br
36	⁸³Kr	⁸³Kr
37	⁸⁴Rb	⁸³Rb
38	⁸⁵Sr	⁸³Sr
39	⁸⁶Y	⁸³Y
40	⁸⁷Zr	⁸³Zr
41	⁸⁸Nb	⁸³Nb
42	⁸⁹Mo	⁸³Mo
43	⁹⁰Tc
44	⁹¹Ru
45	⁹²Rh
46	⁹³Pd
47	⁹⁴Ag
48	⁹⁵Cd
49	⁹⁶In