Technetium-93

Properties and data of the isotope ⁹³Tc.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Technetium-93; Tc-93Symbol:⁹³Tc or 9343TcMass number A:93 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:50Isotopic mass:92.9102451(11) u (atomic weight of Technetium-93)Nuclide mass:92.8866573 u (calculated nuclear mass without electrons)Mass excess:-83.60615 MeVMass defect:0.859477076 u (per nucleus)Nuclear binding energy:800.59773943 MeV (per nucleus)
8.60857784 MeV (average binding energy per nucleon)Separation energy:S_N = 12.752(3) MeV (first neutron)
S_P = 4.0865(10) MeV (first proton)Half-life:2.75(5) hDecay constant λ:7.001486672322 × 10^-5 s^-1Specific activity α:4.583036844532 × 10⁺¹⁷ Bq g^-1
12386586.066304 Ci g^-1Spin and parity:
(nuclear angular momentum)9/2+Magnetic dipole moment:μ(μ_N) = 6.32(6)Nuclear g-factor:g_l = 1.4044444444444Year of discovery:1948

Radioactive Decay

Half-life T_½ = 2.75(5) h (hours) respectively 9.900 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁹²Mo	100 %	3.201(1) MeV

Parent Nuclides

Direct parent isotope is: ⁹³Ru.

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
^93m1Tc	391.84(8) keV	43.5(10) min	1/2-
^93m2Tc	2185.16(15)	10.2(3) μs	(17/2)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 50) and isobaric (same nucleon number A = 93) with Technetium-93. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 50	Isobar A = 93
28	⁷⁸Ni
29	⁷⁹Cu
30	⁸⁰Zn
31	⁸¹Ga
32	⁸²Ge
33	⁸³As
34	⁸⁴Se	⁹³Se
35	⁸⁵Br	⁹³Br
36	⁸⁶Kr	⁹³Kr
37	⁸⁷Rb	⁹³Rb
38	⁸⁸Sr	⁹³Sr
39	⁸⁹Y	⁹³Y
40	⁹⁰Zr	⁹³Zr
41	⁹¹Nb	⁹³Nb
42	⁹²Mo	⁹³Mo
43	⁹³Tc	⁹³Tc
44	⁹⁴Ru	⁹³Ru
45	⁹⁵Rh	⁹³Rh
46	⁹⁶Pd	⁹³Pd
47	⁹⁷Ag	⁹³Ag
48	⁹⁸Cd
49	⁹⁹In
50	¹⁰⁰Sn