Technetium-113

Properties and data of the isotope ¹¹³Tc.

Contents

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

General data

Name of the isotope:Technetium-113; Tc-113Symbol:¹¹³Tc or 11343TcMass number A:113 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:70Isotopic mass:112.932569(4) u (atomic weight of Technetium-113)Nuclide mass:112.9089812 u (calculated nuclear mass without electrons)Mass excess:-62.81157 MeVMass defect:1.010451496 u (per nucleus)Nuclear binding energy:941.22950582 MeV (per nucleus)
8.32946465 MeV (average binding energy per nucleon)Separation energy:S_N = 5.624(6) MeV (first neutron)
S_P = 12.64(20) MeV (first proton)Half-life:152(8) msDecay constant λ:4.5903786792049 s^-1Specific activity α:2.468205982734 × 10⁺²² Bq g^-1
667082698036.27 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2+)Year of discovery:1992

Radioactive Decay

Half-life T_½ = 152(8) ms respectively 1.51 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹³Ru	97.9 %	9.06(4) MeV
β^-, n	¹¹²Ru	2.1(3) %	4.748(10) MeV

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
^113mTc	114.4(5) keV	0.526 μs	(5/2-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 70) and isobaric (same nucleon number A = 113) with Technetium-113. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 70	Isobar A = 113
39	¹⁰⁹Y
40	¹¹⁰Zr
41	¹¹¹Nb	¹¹³Nb
42	¹¹²Mo	¹¹³Mo
43	¹¹³Tc	¹¹³Tc
44	¹¹⁴Ru	¹¹³Ru
45	¹¹⁵Rh	¹¹³Rh
46	¹¹⁶Pd	¹¹³Pd
47	¹¹⁷Ag	¹¹³Ag
48	¹¹⁸Cd	¹¹³Cd
49	¹¹⁹In	¹¹³In
50	¹²⁰Sn	¹¹³Sn
51	¹²¹Sb	¹¹³Sb
52	¹²²Te	¹¹³Te
53	¹²³I	¹¹³I
54	¹²⁴Xe	¹¹³Xe
55	¹²⁵Cs	¹¹³Cs
56	¹²⁶Ba
57	¹²⁷La
58	¹²⁸Ce
59	¹²⁹Pr
60	¹³⁰Nd
61	¹³¹Pm
62	¹³²Sm
63	¹³³Eu
64	¹³⁴Gd
65	¹³⁵Tb