Ruthenium-92

Properties and data of the isotope ⁹²Ru.

Content

General data

Name of the isotope:Ruthenium-92; Ru-92Symbol:⁹²Ru or 9244RuMass number A:92 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:48Isotopic mass:91.9202344(24) u (atomic weight of Ruthenium-92)Nuclide mass:91.8960981 u (calculated nuclear mass without electrons)Mass excess:-74.30118 MeVMass defect:0.83998297600002 u (per nucleus)Nuclear binding energy:782.43910225 MeV (per nucleus)
8.50477285 MeV (average binding energy per nucleon)Separation energy:S_N = 14.133(4) MeV (first neutron)
S_P = 5.604(4) MeV (first proton)Half-life:3.65(5) minDecay constant λ:0.0031650556189952 s^-1Specific activity α:2.094550633749 × 10⁺¹⁹ Bq g^-1
566094765.87832 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1971

Radioactive Decay

Half-life T_½ = 3.65(5) min (minutes) respectively 2.19 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁹²Tc	100 %	4.624(4) MeV

Parent Nuclides

Direct parent isotopes are: ⁹²Rh, ⁹³Pd.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 48) and isobaric (same nucleon number A = 92) with Ruthenium-92. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 48	Isobar A = 92
26	⁷⁴Fe
27	⁷⁵Co
28	⁷⁶Ni
29	⁷⁷Cu
30	⁷⁸Zn
31	⁷⁹Ga
32	⁸⁰Ge
33	⁸¹As	⁹²As
34	⁸²Se	⁹²Se
35	⁸³Br	⁹²Br
36	⁸⁴Kr	⁹²Kr
37	⁸⁵Rb	⁹²Rb
38	⁸⁶Sr	⁹²Sr
39	⁸⁷Y	⁹²Y
40	⁸⁸Zr	⁹²Zr
41	⁸⁹Nb	⁹²Nb
42	⁹⁰Mo	⁹²Mo
43	⁹¹Tc	⁹²Tc
44	⁹²Ru	⁹²Ru
45	⁹³Rh	⁹²Rh
46	⁹⁴Pd	⁹²Pd
47	⁹⁵Ag	⁹²Ag
48	⁹⁶Cd
49	⁹⁷In