Ruthenium-86

Properties and data of the isotope ⁸⁶Ru.

Content

General data

Name of the isotope:Ruthenium-86; Ru-86Symbol:⁸⁶Ru or 8644RuMass number A:86 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:42Isotopic mass:85.95730(43) u (atomic weight of Ruthenium-86)Nuclide mass:85.9331637 u (calculated nuclear mass without electrons)Mass excess:-39.77479 MeVMass defect:0.75092788000001 u (per nucleus)Nuclear binding energy:699.48481465 MeV (per nucleus)
8.13354436 MeV (average binding energy per nucleon)Separation energy:S_N = 16.89(64) MeV (first neutron)
S_P = 1.21(56) MeV (first proton)Half-life:438 nsDecay constant λ:1582527.8094976 s^-1Specific activity α:1.121200633360 × 10⁺²⁸ Bq g^-1
3.030271982054 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Mirror nucleus:Molybdenum-86Year of discovery:2017

Radioactive Decay

Half-life T_½ = 438 ns respectively 4.38 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁸⁶Tc	?	11.8 MeV
EE, p	⁸⁵Mo	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 42) and isobaric (same nucleon number A = 86) with Ruthenium-86. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 42	Isobar A = 86
23	⁶⁵V
24	⁶⁶Cr
25	⁶⁷Mn
26	⁶⁸Fe
27	⁶⁹Co
28	⁷⁰Ni
29	⁷¹Cu
30	⁷²Zn
31	⁷³Ga	⁸⁶Ga
32	⁷⁴Ge	⁸⁶Ge
33	⁷⁵As	⁸⁶As
34	⁷⁶Se	⁸⁶Se
35	⁷⁷Br	⁸⁶Br
36	⁷⁸Kr	⁸⁶Kr
37	⁷⁹Rb	⁸⁶Rb
38	⁸⁰Sr	⁸⁶Sr
39	⁸¹Y	⁸⁶Y
40	⁸²Zr	⁸⁶Zr
41	⁸³Nb	⁸⁶Nb
42	⁸⁴Mo	⁸⁶Mo
43	⁸⁵Tc	⁸⁶Tc
44	⁸⁶Ru	⁸⁶Ru