Ruthenium-95

Properties and data of the isotope ⁹⁵Ru.

Content

General data

Name of the isotope:Ruthenium-95; Ru-95Symbol:⁹⁵Ru or 9544RuMass number A:95 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:51Isotopic mass:94.910404(10) u (atomic weight of Ruthenium-95)Nuclide mass:94.8862677 u (calculated nuclear mass without electrons)Mass excess:-83.45814 MeVMass defect:0.875808124 u (per nucleus)Nuclear binding energy:815.81001266 MeV (per nucleus)
8.58747382 MeV (average binding energy per nucleon)Separation energy:S_N = 8.945(10) MeV (first neutron)
S_P = 6.588(10) MeV (first proton)Half-life:1.643(13) hDecay constant λ:0.00011718860833163 s^-1Specific activity α:7.50772666545 × 10⁺¹⁷ Bq g^-1
20291153.149886 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μ_N) = 0.861(7)Nuclear g-factor:g_l = 0.3444Year of discovery:1948

Radioactive Decay

Half-life T_½ = 1.643(13) h (hours) respectively 5.9148 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁹⁵Tc	100 %	2.564(11) MeV

Parent Nuclides

Direct parent isotope is: ⁹⁵Rh.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 51) and isobaric (same nucleon number A = 95) with Ruthenium-95. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 51	Isobar A = 95
28	⁷⁹Ni
29	⁸⁰Cu
30	⁸¹Zn
31	⁸²Ga
32	⁸³Ge
33	⁸⁴As
34	⁸⁵Se	⁹⁵Se
35	⁸⁶Br	⁹⁵Br
36	⁸⁷Kr	⁹⁵Kr
37	⁸⁸Rb	⁹⁵Rb
38	⁸⁹Sr	⁹⁵Sr
39	⁹⁰Y	⁹⁵Y
40	⁹¹Zr	⁹⁵Zr
41	⁹²Nb	⁹⁵Nb
42	⁹³Mo	⁹⁵Mo
43	⁹⁴Tc	⁹⁵Tc
44	⁹⁵Ru	⁹⁵Ru
45	⁹⁶Rh	⁹⁵Rh
46	⁹⁷Pd	⁹⁵Pd
47	⁹⁸Ag	⁹⁵Ag
48	⁹⁹Cd	⁹⁵Cd
49	¹⁰⁰In
50	¹⁰¹Sn