Tungsten-183
Properties and data of the isotope 183W.
See also: list of Tungsten isotopes.
General data
Name of the isotope:Tungsten-183; W-183Symbol:183W or 18374WMass number A:183 (= number of nucleons)Atomic number Z:74 (= number of protons)Neutrons N:109Isotopic mass:182.950223(6) u (atomic weight of Tungsten-183)Nuclide mass:182.9096321 u (calculated nuclear mass without electrons)Mass excess:-46.36698 MeVMass defect:1.573305212 u (per nucleus)Nuclear binding energy:1465.52436515 MeV (per nucleus)
8.00832986 MeV (average binding energy per nucleon)Separation energy:SN = 6.19084(4) MeV (first neutron)
SP = 7.2246(14) MeV (first proton)Half-life:6.7 × 1020 aDecay constant λ:3.280530285028 × 10-29 s-1Specific activity α:1.085484366578 × 10-7 Bq g-1
2.933741531293 × 10-18 Ci g-1Spin and parity:
(nuclear angular momentum)1/2-Magnetic dipole moment:μ(μN) = + 0.11778476(9)Charge radius:5.3611(20) femtometer fmYear of discovery:1930
Radioactive Decay
Half-life T½ = 6.7 × 1020 a respectively 2.112912 × 1028 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| α | 179Hf | ? | 1.6724(16) MeV | |
Parent Nuclides
Direct parent isotopes are: 183Re, 183Ta.
Occurrence
Comparison of the natural Tungsten isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
| | Atomic Mass ma | Quantity | Half-life | Spin |
|---|
Tungsten
Isotopic mixture | 183.84 u | 100 % | | |
| Isotope 180W | 179.94671(2) u | 0.12(1) % | 1.8(2) × 1018 a | 0+ |
| Isotope 182W | 181.948204(6) u | 26.50(16) % | stable | 0+ |
| Isotope 183W | 182.950223(6) u | 14.31(4) % | 6.7 × 1020 a | 1/2- |
| Isotope 184W | 183.950931(6) u | 30.64(2) % | stable | 0+ |
| Isotope 186W | 185.95436(2) u | 28.43(19) % | stable | 0+ |
NMR data
Nuclear magnetic properties of the NMR active Nuclide 183W
Isotope:183W-NMRQuantity:14.31(4) %Spin:1/2-Nuclearmagnetic moment
μ/μN:+ 0.11778476(9)Gyromagnetic ratio γ:1.1283 · 107 rad T-1 s-1Nuclear g-factor:gl = 0.23556952Resonance frequency:v0 = 1.7957 at 1 TRelative Sensitivity:0.00008 (H0 = const.)
0.0422 (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 |
|---|
| 183mW | 309.492(4) keV | 5.3(8) s | 11/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 109) and isobaric (same nucleon number A = 183) with Tungsten-183. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 109 | Isobar A = 183 |
|---|
| 68 | 177Er | |
| 69 | 178Tm | |
| 70 | 179Yb | 183Yb |
| 71 | 180Lu | 183Lu |
| 72 | 181Hf | 183Hf |
| 73 | 182Ta | 183Ta |
| 74 | 183W | 183W |
| 75 | 184Re | 183Re |
| 76 | 185Os | 183Os |
| 77 | 186Ir | 183Ir |
| 78 | 187Pt | 183Pt |
| 79 | 188Au | 183Au |
| 80 | 189Hg | 183Hg |
| 81 | 190Tl | 183Tl |
| 82 | 191Pb | 183Pb |
| 83 | 192Bi | |
| 84 | 193Po | |
| 85 | 194At | |
| 86 | 195Rn | |
External data and identifiers
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/tungsten-183
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