Iridium-193
Properties and data of the isotope 193Ir.
See also: list of Iridium isotopes.
General data
Name of the isotope:Iridium-193; Ir-193Symbol:193Ir or 19377IrMass number A:193 (= number of nucleons)Atomic number Z:77 (= number of protons)Neutrons N:116Isotopic mass:192.96292(2) u (atomic weight of Iridium-193)Nuclide mass:192.9206838 u (calculated nuclear mass without electrons)Mass excess:-34.5398 MeVMass defect:1.64473772 u (per nucleus)Nuclear binding energy:1532.06331775 MeV (per nucleus)
7.93815191 MeV (average binding energy per nucleon)Separation energy:SN = 7.77199(20) MeV (first neutron)
SP = 5.9430(24) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3/2+Magnetic dipole moment:μ(μN) = + 0.1637(6)Charge radius:5.4032(1061) femtometer fmYear of discovery:1935
Parent Nuclides
Direct parent isotopes are: 193Os, 193Pt.
Occurrence
Comparison of the natural Iridium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
| | Atomic Mass ma | Quantity | Half-life | Spin |
|---|
Iridium
Isotopic mixture | 192.217 u | 100 % | | |
| Isotope 191Ir | 190.96059(2) u | 37.3(2) % | stable | 3/2+ |
| Isotope 193Ir | 192.96292(2) u | 62.7(2) % | stable | 3/2+ |
NMR data
Nuclear magnetic properties of the NMR active Nuclide 193Ir
Isotope:193Ir-NMRQuantity:62.7(2) %Spin:3/2+Nuclearmagnetic moment
μ/μN:+ 0.1637(6)Gyromagnetic ratio γ:0.508 · 107 rad T-1 s-1Nuclear g-factor:gl = 0.10913333333333Quadrupole moment Q:+ 0.751(9) barn (100 fm2)Resonance frequency:v0 = 0.8319 at 1 TRelative Sensitivity:0.00004 (H0 = const.)
0.0977 (v0 = const.)
[related to 1H = 1.000]
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 |
|---|
| 193mIr | 80.239(6) keV | 10.53(4) d | 11/2- |
| 193m2Ir | 2278.9(5) keV | 124.8(21) μs | 31/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 116) and isobaric (same nucleon number A = 193) with Iridium-193. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 116 | Isobar A = 193 |
|---|
| 71 | 187Lu | |
| 72 | 188Hf | |
| 73 | 189Ta | 193Ta |
| 74 | 190W | 193W |
| 75 | 191Re | 193Re |
| 76 | 192Os | 193Os |
| 77 | 193Ir | 193Ir |
| 78 | 194Pt | 193Pt |
| 79 | 195Au | 193Au |
| 80 | 196Hg | 193Hg |
| 81 | 197Tl | 193Tl |
| 82 | 198Pb | 193Pb |
| 83 | 199Bi | 193Bi |
| 84 | 200Po | 193Po |
| 85 | 201At | 193At |
| 86 | 202Rn | 193Rn |
| 87 | 203Fr | |
| 88 | 204Ra | |
| 89 | 205Ac | |
External data and identifiers
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/iridium-193
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