Ruthenium-98

Properties and data of the isotope ⁹⁸Ru.

Contents

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:54Isotopic 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:S_N = 10.176(7) MeV (first neutron)
S_P = 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

Parent Nuclides

Direct parent isotopes are: ⁹⁸Rh, ⁹⁸Tc.

Occurrence

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

	Atomic Mass m_a	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.

Z	Isotone N = 54	Isobar A = 98
30	⁸⁴Zn
31	⁸⁵Ga
32	⁸⁶Ge
33	⁸⁷As
34	⁸⁸Se
35	⁸⁹Br	⁹⁸Br
36	⁹⁰Kr	⁹⁸Kr
37	⁹¹Rb	⁹⁸Rb
38	⁹²Sr	⁹⁸Sr
39	⁹³Y	⁹⁸Y
40	⁹⁴Zr	⁹⁸Zr
41	⁹⁵Nb	⁹⁸Nb
42	⁹⁶Mo	⁹⁸Mo
43	⁹⁷Tc	⁹⁸Tc
44	⁹⁸Ru	⁹⁸Ru
45	⁹⁹Rh	⁹⁸Rh
46	¹⁰⁰Pd	⁹⁸Pd
47	¹⁰¹Ag	⁹⁸Ag
48	¹⁰²Cd	⁹⁸Cd
49	¹⁰³In	⁹⁸In
50	¹⁰⁴Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te