Tellurium-115
Properties and data of the isotope 115Te.
See also: list of Tellurium isotopes.
General data
Name of the isotope:Tellurium-115; Te-115Symbol:115Te or 11552TeMass number A:115 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:63Isotopic mass:114.91190(3) u (atomic weight of Tellurium-115)Nuclide mass:114.8833756 u (calculated nuclear mass without electrons)Mass excess:-82.06462 MeVMass defect:1.040891372 u (per nucleus)Nuclear binding energy:969.58406767 MeV (per nucleus)
8.43116581 MeV (average binding energy per nucleon)Separation energy:SN = 8.25(4) MeV (first neutron)
SP = 4.86(4) MeV (first proton)Half-life:5.8(2) minDecay constant λ:0.0019918022429883 s-1Specific activity α:1.052185409860 × 10+19 Bq g-1
284374435.09754 Ci g-1Spin and parity:
(nuclear angular momentum)7/2+Year of discovery:1961
Radioactive Decay
Half-life T½ = 5.8(2) min (minutes) respectively 3.48 × 102 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EE/β+ | 115Sb | 100 % | 4.94(3) MeV | |
Parent Nuclides
Direct parent isotope is: 115I.
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 |
---|
115mTe | | 6.7(4) min | (1/2)+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 63) and isobaric (same nucleon number A = 115) with Tellurium-115. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 63 | Isobar A = 115 |
35 | 98Br | |
36 | 99Kr | |
37 | 100Rb | |
38 | 101Sr | |
39 | 102Y | |
40 | 103Zr | |
41 | 104Nb | 115Nb |
42 | 105Mo | 115Mo |
43 | 106Tc | 115Tc |
44 | 107Ru | 115Ru |
45 | 108Rh | 115Rh |
46 | 109Pd | 115Pd |
47 | 110Ag | 115Ag |
48 | 111Cd | 115Cd |
49 | 112In | 115In |
50 | 113Sn | 115Sn |
51 | 114Sb | 115Sb |
52 | 115Te | 115Te |
53 | 116I | 115I |
54 | 117Xe | 115Xe |
55 | 118Cs | 115Cs |
56 | 119Ba | 115Ba |
57 | 120La | |
58 | 121Ce | |
59 | 122Pr | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/tellurium-115
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