Technetium-100m2

Properties and data of the isotope ^100m2Tc.

Contents

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

General data

Name of the isotope:Technetium-100m2; Tc-100m2Symbol:^100m2Tc or 100m243TcMass number A:100 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:57Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.3255813953488 (= neutron-proton ratio)Neutron excess (N-Z):14Excitation energy:243.95(4) keVIsotopic mass:99.9076527(14) u (atomic weight of Technetium-100m2)Nuclide mass:99.8840649 u (calculated nuclear mass without electrons)Mass excess:-86.02096 MeVMass defect:0.92272388800001 u (per nucleus)Nuclear binding energy:859.51176533 MeV (per nucleus)
8.59511765 MeV (average binding energy per nucleon)Half-life:3.2(2) μsDecay constant λ:216608.49392498 s^-1Specific activity α:1.305652575128 × 10⁺²⁷ Bq g^-1
3.528790743590 × 10⁺¹⁶ Ci g^-1Spin and parity:
(nuclear angular momentum)(6)+

Radioactive Decay

Half-life T_½ = 3.2(2) μs respectively 3.2 × 10^-6 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	¹⁰⁰Tc	100 %

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
¹⁰⁰Tc		15.46(19) s	1+
^100m1Tc	200.67(4) keV	8.32(14) μs	(4)+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 57) and isobaric (same nucleon number A = 100) with Technetium-100m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 57	Isobar A = 100
32	⁸⁹Ge
33	⁹⁰As
34	⁹¹Se
35	⁹²Br
36	⁹³Kr	¹⁰⁰Kr
37	⁹⁴Rb	¹⁰⁰Rb
38	⁹⁵Sr	¹⁰⁰Sr
39	⁹⁶Y	¹⁰⁰Y
40	⁹⁷Zr	¹⁰⁰Zr
41	⁹⁸Nb	¹⁰⁰Nb
42	⁹⁹Mo	¹⁰⁰Mo
43	¹⁰⁰Tc	¹⁰⁰Tc
44	¹⁰¹Ru	¹⁰⁰Ru
45	¹⁰²Rh	¹⁰⁰Rh
46	¹⁰³Pd	¹⁰⁰Pd
47	¹⁰⁴Ag	¹⁰⁰Ag
48	¹⁰⁵Cd	¹⁰⁰Cd
49	¹⁰⁶In	¹⁰⁰In
50	¹⁰⁷Sn	¹⁰⁰Sn
51	¹⁰⁸Sb
52	¹⁰⁹Te
53	¹¹⁰I
54	¹¹¹Xe
55	¹¹²Cs