Iodine-143
Properties and data of the isotope 143I.
See also: List of individual Iodine isotopes (and general data sources).
General data
Name of the isotope:Iodine-143; I-143Other names:Jod-143Symbol:143I or 14353IMass number A:143 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:90Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.6981132075472 (= neutron-proton ratio)Neutron excess (N-Z):37Isotopic mass:142.94565(21) u (atomic weight of Iodine-143)Nuclide mass:142.9165771 u (calculated nuclear mass without electrons)Mass excess:-50.6267 MeVMass defect:1.248919136 u (per nucleus)Nuclear binding energy:1163.36068167 MeV (per nucleus)
8.13538938 MeV (average binding energy per nucleon)Separation energy:SN = 3.93(42) MeV (first neutron)
SP = 11.55(54) MeV (first proton)Half-life:130(45) msDecay constant λ:5.3319013889227 s-1Specific activity α:2.261229663055 × 10+22 Bq g-1
611143152177.11 Ci g-1Spin and parity:
(nuclear angular momentum)Year of discovery:1994
Radioactive Decay
Half-life T½ = 130(45) ms respectively 1.30 × 10-1 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 143Xe | ? | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 90) and isobaric (same nucleon number A = 143) with Iodine-143. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 90 | Isobar A = 143 |
|---|
| 50 | 140Sn | |
| 51 | 141Sb | |
| 52 | 142Te | 143Te |
| 53 | 143I | 143I |
| 54 | 144Xe | 143Xe |
| 55 | 145Cs | 143Cs |
| 56 | 146Ba | 143Ba |
| 57 | 147La | 143La |
| 58 | 148Ce | 143Ce |
| 59 | 149Pr | 143Pr |
| 60 | 150Nd | 143Nd |
| 61 | 151Pm | 143Pm |
| 62 | 152Sm | 143Sm |
| 63 | 153Eu | 143Eu |
| 64 | 154Gd | 143Gd |
| 65 | 155Tb | 143Tb |
| 66 | 156Dy | 143Dy |
| 67 | 157Ho | 143Ho |
| 68 | 158Er | 143Er |
| 69 | 159Tm | |
| 70 | 160Yb | |
| 71 | 161Lu | |
| 72 | 162Hf | |
| 73 | 163Ta | |
| 74 | 164W | |
| 75 | 165Re | |
| 76 | 166Os | |
| 77 | 167Ir | |
| 78 | 168Pt | |
| 80 | 170Hg | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/iodine-143
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