Technetium-86

Properties and data of the isotope ⁸⁶Tc.

Contents

See also: List of individual Technetium isotopes (and general data sources).

General data

Name of the isotope:Technetium-86; Tc-86Symbol:⁸⁶Tc or 8643TcMass number A:86 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:43Isotopic mass:85.94464(32) u (atomic weight of Technetium-86)Nuclide mass:85.9210522 u (calculated nuclear mass without electrons)Mass excess:-51.56751 MeVMass defect:0.76442776399999 u (per nucleus)Nuclear binding energy:712.0598756 MeV (per nucleus)
8.279766 MeV (average binding energy per nucleon)Separation energy:S_N = 13.79(50) MeV (first neutron)
S_P = 1.35(30) MeV (first proton)Half-life:55(7) msDecay constant λ:12.602676010181 s^-1Specific activity α:8.928834134759 × 10⁺²² Bq g^-1
2413198414799.8 Ci g^-1Spin and parity:
(nuclear angular momentum)(0+)Isobaric spin: 1Year of discovery:1992

Radioactive Decay

Half-life T_½ = 55(7) ms respectively 5.5 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁸⁶Mo		12.54(30) MeV
EC, p	⁸⁵Nb	?

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
^86mTc	1534 keV	1.10(14) μs	(6+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 43) and isobaric (same nucleon number A = 86) with Technetium-86. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 43	Isobar A = 86
22	⁶⁵Ti
23	⁶⁶V
24	⁶⁷Cr
25	⁶⁸Mn
26	⁶⁹Fe
27	⁷⁰Co
28	⁷¹Ni
29	⁷²Cu
30	⁷³Zn
31	⁷⁴Ga	⁸⁶Ga
32	⁷⁵Ge	⁸⁶Ge
33	⁷⁶As	⁸⁶As
34	⁷⁷Se	⁸⁶Se
35	⁷⁸Br	⁸⁶Br
36	⁷⁹Kr	⁸⁶Kr
37	⁸⁰Rb	⁸⁶Rb
38	⁸¹Sr	⁸⁶Sr
39	⁸²Y	⁸⁶Y
40	⁸³Zr	⁸⁶Zr
41	⁸⁴Nb	⁸⁶Nb
42	⁸⁵Mo	⁸⁶Mo
43	⁸⁶Tc	⁸⁶Tc
44	⁸⁷Ru	⁸⁶Ru