See also: List of individual Ruthenium isotopes (and general data sources).
General data
Name of the isotope:Ruthenium-98; Ru-98Symbol:98Ru or 9844RuMass number A:98 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:54Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.2272727272727 (= neutron-proton ratio)Neutron excess (N-Z):10Isotopic mass:97.90529(5) u (atomic weight of Ruthenium-98)Nuclide mass:97.8811537 u (calculated nuclear mass without electrons)Mass excess:-88.2218 MeVMass defect:0.90691687200001 u (per nucleus)Nuclear binding energy:844.78762477 MeV (per nucleus) 8.62028189 MeV (average binding energy per nucleon)Separation energy:SN = 10.176(7) MeV (first neutron) SP = 8.289(8) MeV (first proton)Half-life:stableSpin and parity: (nuclear angular momentum)0+Charge radius:4.4229(55) femtometer fmYear of discovery:1944
Comparison of the natural Ruthenium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
Atomic Mass ma
Quantity
Half-life
Spin
Ruthenium Isotopic mixture
101.07 u
100 %
Isotope 96Ru
95.907590(3) u
5.54(14) %
stable
0+
Isotope 98Ru
97.90529(5) u
1.87(3) %
stable
0+
Isotope 99Ru
98.905934(7) u
12.76(14) %
stable
5/2+
Isotope 100Ru
99.904214(7) u
12.60(7) %
stable
0+
Isotope 101Ru
100.905577(8) u
17.06(2) %
stable
5/2+
Isotope 102Ru
101.904344(8) u
31.55(14) %
stable
0+
Isotope 104Ru
103.90543(2) u
18.62(27) %
stable
0+
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 98) with Ruthenium-98. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
