Tellurium-105

Properties and data of the isotope ¹⁰⁵Te.

Content

General data

Name of the isotope:Tellurium-105; Te-105Symbol:¹⁰⁵Te or 10552TeMass number A:105 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:53Isotopic mass:104.94330(32) u (atomic weight of Tellurium-105)Nuclide mass:104.9147756 u (calculated nuclear mass without electrons)Mass excess:-52.81571 MeVMass defect:0.92284221200001 u (per nucleus)Nuclear binding energy:859.62198342 MeV (per nucleus)
8.18687603 MeV (average binding energy per nucleon)Separation energy:
S_P = 0.93(32) MeV (first proton)Half-life:0.62(7) μsDecay constant λ:1117979.3234838 s^-1Specific activity α:6.473681696650 × 10⁺²⁷ Bq g^-1
1.749643701797 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2+)Year of discovery:2006

Radioactive Decay

Half-life T_½ = 0.62(7) μs respectively 6.2 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁰¹Sn	ca. 100 %	5.069(3) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 53) and isobaric (same nucleon number A = 105) with Tellurium-105. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 53	Isobar A = 105
29	⁸²Cu
30	⁸³Zn
31	⁸⁴Ga
32	⁸⁵Ge
33	⁸⁶As
34	⁸⁷Se
35	⁸⁸Br
36	⁸⁹Kr
37	⁹⁰Rb
38	⁹¹Sr	¹⁰⁵Sr
39	⁹²Y	¹⁰⁵Y
40	⁹³Zr	¹⁰⁵Zr
41	⁹⁴Nb	¹⁰⁵Nb
42	⁹⁵Mo	¹⁰⁵Mo
43	⁹⁶Tc	¹⁰⁵Tc
44	⁹⁷Ru	¹⁰⁵Ru
45	⁹⁸Rh	¹⁰⁵Rh
46	⁹⁹Pd	¹⁰⁵Pd
47	¹⁰⁰Ag	¹⁰⁵Ag
48	¹⁰¹Cd	¹⁰⁵Cd
49	¹⁰²In	¹⁰⁵In
50	¹⁰³Sn	¹⁰⁵Sn
51	¹⁰⁴Sb	¹⁰⁵Sb
52	¹⁰⁵Te	¹⁰⁵Te