Technetium-102m

Properties and data of the isotope ^102mTc.

Contents

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

General data

Name of the isotope:Technetium-102m; Tc-102mSymbol:^102mTc or 102m43TcMass number A:102 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:59Isotopic mass:101.909207(10) u (atomic weight of Technetium-102m)
Excitation energy: +x keVNuclide mass:101.8856192 u (calculated nuclear mass without electrons)Mass excess:-84.57966 MeVMass defect:0.93850642000001 u (per nucleus)Nuclear binding energy:874.21309919 MeV (per nucleus)
8.57071666 MeV (average binding energy per nucleon)Half-life:4.35(7) minDecay constant λ:0.0026557363239845 s^-1Specific activity α:1.58348695345 × 10⁺¹⁹ Bq g^-1
427969446.87946 Ci g^-1Spin and parity:
(nuclear angular momentum)(4.5)

Radioactive Decay

Half-life T_½ = 4.35(7) min (minutes) respectively 2.61 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁰²Ru	98(2) %	4.530 MeV
Iso	¹⁰²Tc	2(2) %	?

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
¹⁰²Tc		5.28(15) s	1+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 59) and isobaric (same nucleon number A = 102) with Technetium-102m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 59	Isobar A = 102
33	⁹²As
34	⁹³Se
35	⁹⁴Br
36	⁹⁵Kr
37	⁹⁶Rb	¹⁰²Rb
38	⁹⁷Sr	¹⁰²Sr
39	⁹⁸Y	¹⁰²Y
40	⁹⁹Zr	¹⁰²Zr
41	¹⁰⁰Nb	¹⁰²Nb
42	¹⁰¹Mo	¹⁰²Mo
43	¹⁰²Tc	¹⁰²Tc
44	¹⁰³Ru	¹⁰²Ru
45	¹⁰⁴Rh	¹⁰²Rh
46	¹⁰⁵Pd	¹⁰²Pd
47	¹⁰⁶Ag	¹⁰²Ag
48	¹⁰⁷Cd	¹⁰²Cd
49	¹⁰⁸In	¹⁰²In
50	¹⁰⁹Sn	¹⁰²Sn
51	¹¹⁰Sb
52	¹¹¹Te
53	¹¹²I
54	¹¹³Xe
55	¹¹⁴Cs
56	¹¹⁵Ba
57	¹¹⁶La