Technetium-94

Properties and data of the isotope ⁹⁴Tc.

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-94; Tc-94Symbol:⁹⁴Tc or 9443TcMass number A:94 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:51Isotopic mass:93.909652(4) u (atomic weight of Technetium-94)Nuclide mass:93.8860642 u (calculated nuclear mass without electrons)Mass excess:-84.15862 MeVMass defect:0.86873509200001 u (per nucleus)Nuclear binding energy:809.22152579 MeV (per nucleus)
8.60873964 MeV (average binding energy per nucleon)Separation energy:S_N = 8.624(4) MeV (first neutron)
S_P = 4.640(4) MeV (first proton)Half-life:293(1) minDecay constant λ:3.942816726734 × 10^-5 s^-1Specific activity α:2.553139539065 × 10⁺¹⁷ Bq g^-1
6900377.13261 Ci g^-1Spin and parity:
(nuclear angular momentum)7+Magnetic dipole moment:μ(μ_N) = 5.12(5)Nuclear g-factor:g_l = 0.73142857142857Year of discovery:1948

Radioactive Decay

Half-life T_½ = 293(1) min (minutes) respectively 1.7580 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁹⁴Mo	100 %	4.256(4) MeV

Parent Nuclides

Direct parent isotope is: ⁹⁴Ru.

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
^94mTc	76(3) keV	52.0(10) min	(2)+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 51) and isobaric (same nucleon number A = 94) with Technetium-94. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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