Ruthenium-102

Properties and data of the isotope ¹⁰²Ru.

Content

General data

Name of the isotope:Ruthenium-102; Ru-102Symbol:¹⁰²Ru or 10244RuMass number A:102 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:58Isotopic mass:101.904344(8) u (atomic weight of Ruthenium-102)Nuclide mass:101.8802077 u (calculated nuclear mass without electrons)Mass excess:-89.10299 MeVMass defect:0.94252253600001 u (per nucleus)Nuclear binding energy:877.95408715 MeV (per nucleus)
8.60739301 MeV (average binding energy per nucleon)Separation energy:S_N = 9.21964(5) MeV (first neutron)
S_P = 10.051(24) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.4809(18) femtometer fmYear of discovery:1931

Parent Nuclides

Direct parent isotopes are: ¹⁰²Rh, ¹⁰²Tc.

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 = 58) and isobaric (same nucleon number A = 102) with Ruthenium-102. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 58	Isobar A = 102
32	⁹⁰Ge
33	⁹¹As
34	⁹²Se
35	⁹³Br
36	⁹⁴Kr
37	⁹⁵Rb	¹⁰²Rb
38	⁹⁶Sr	¹⁰²Sr
39	⁹⁷Y	¹⁰²Y
40	⁹⁸Zr	¹⁰²Zr
41	⁹⁹Nb	¹⁰²Nb
42	¹⁰⁰Mo	¹⁰²Mo
43	¹⁰¹Tc	¹⁰²Tc
44	¹⁰²Ru	¹⁰²Ru
45	¹⁰³Rh	¹⁰²Rh
46	¹⁰⁴Pd	¹⁰²Pd
47	¹⁰⁵Ag	¹⁰²Ag
48	¹⁰⁶Cd	¹⁰²Cd
49	¹⁰⁷In	¹⁰²In
50	¹⁰⁸Sn	¹⁰²Sn
51	¹⁰⁹Sb
52	¹¹⁰Te
53	¹¹¹I
54	¹¹²Xe
55	¹¹³Cs
56	¹¹⁴Ba