Technetium-97

Properties and data of the isotope ⁹⁷Tc.

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-97; Tc-97Symbol:⁹⁷Tc or 9743TcMass number A:97 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:54Isotopic mass:96.906361(4) u (atomic weight of Technetium-97)Nuclide mass:96.8827732 u (calculated nuclear mass without electrons)Mass excess:-87.22417 MeVMass defect:0.89802084 u (per nucleus)Nuclear binding energy:836.50102433 MeV (per nucleus)
8.6237219 MeV (average binding energy per nucleon)Separation energy:S_N = 9.474(7) MeV (first neutron)
S_P = 5.719(4) MeV (first proton)Half-life:4.21(16) × 10⁶ aDecay constant λ:5.22079641560 × 10^-15 s^-1Specific activity α:32750386.891473 Bq g^-1
0.00088514559166143 Ci g^-1Spin and parity:
(nuclear angular momentum)9/2+Magnetic dipole moment:μ(μ_N) = 5.82(9)Nuclear g-factor:g_l = 1.2933333333333Year of discovery:1946

Radioactive Decay

Half-life T_½ = 4.21(16) × 10⁶ a respectively 1.3276656 × 10¹⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC	⁹⁷Mo	100 %	0.320(4) MeV

Parent Nuclides

Direct parent isotope is: ⁹⁷Ru.

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
^97mTc	96.57(6) keV	91.0(6) d	1/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 97) with Technetium-97. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 54	Isobar A = 97
30	⁸⁴Zn
31	⁸⁵Ga
32	⁸⁶Ge
33	⁸⁷As
34	⁸⁸Se
35	⁸⁹Br	⁹⁷Br
36	⁹⁰Kr	⁹⁷Kr
37	⁹¹Rb	⁹⁷Rb
38	⁹²Sr	⁹⁷Sr
39	⁹³Y	⁹⁷Y
40	⁹⁴Zr	⁹⁷Zr
41	⁹⁵Nb	⁹⁷Nb
42	⁹⁶Mo	⁹⁷Mo
43	⁹⁷Tc	⁹⁷Tc
44	⁹⁸Ru	⁹⁷Ru
45	⁹⁹Rh	⁹⁷Rh
46	¹⁰⁰Pd	⁹⁷Pd
47	¹⁰¹Ag	⁹⁷Ag
48	¹⁰²Cd	⁹⁷Cd
49	¹⁰³In	⁹⁷In
50	¹⁰⁴Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te