Gadolinium-151
Properties and data of the isotope 151Gd.
See also: List of individual Gadolinium isotopes (and general data sources).
General data
Name of the isotope:Gadolinium-151; Gd-151Symbol:151Gd or 15164GdMass number A:151 (= number of nucleons)Atomic number Z:64 (= number of protons)Neutrons N:87Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.359375 (= neutron-proton ratio)Neutron excess (N-Z):23Isotopic mass:150.920355(3) u (atomic weight of Gadolinium-151)Nuclide mass:150.8852487 u (calculated nuclear mass without electrons)Mass excess:-74.18884 MeVMass defect:1.33429474 u (per nucleus)Nuclear binding energy:1242.88754454 MeV (per nucleus)
8.23104334 MeV (average binding energy per nucleon)Separation energy:SN = 6.496(7) MeV (first neutron)
SP = 6.685(7) MeV (first proton)Half-life:123.9(10) dDecay constant λ:6.475009533524 × 10-8 s-1Specific activity α:2.599561298687 × 10+14 Bq g-1
7025.8413478046 Ci g-1Spin and parity:
(nuclear angular momentum)7/2-Magnetic dipole moment:μ(μN) = 0.77(6)Nuclear g-factor:gl = 0.22Year of discovery:1950
Radioactive Decay
Half-life T½ = 123.9(10) d respectively 1.0704960 × 107 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC | 151Eu | > 99 % | 0.464(4) MeV | |
| α | 147Sm | << 1 % | 2.6527(29) MeV | |
Parent Nuclides
Direct parent isotope is: 151Tb.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 151) with Gadolinium-151. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 87 | Isobar A = 151 |
|---|
| 49 | 136In | |
| 50 | 137Sn | |
| 51 | 138Sb | |
| 52 | 139Te | |
| 53 | 140I | |
| 54 | 141Xe | |
| 55 | 142Cs | 151Cs |
| 56 | 143Ba | 151Ba |
| 57 | 144La | 151La |
| 58 | 145Ce | 151Ce |
| 59 | 146Pr | 151Pr |
| 60 | 147Nd | 151Nd |
| 61 | 148Pm | 151Pm |
| 62 | 149Sm | 151Sm |
| 63 | 150Eu | 151Eu |
| 64 | 151Gd | 151Gd |
| 65 | 152Tb | 151Tb |
| 66 | 153Dy | 151Dy |
| 67 | 154Ho | 151Ho |
| 68 | 155Er | 151Er |
| 69 | 156Tm | 151Tm |
| 70 | 157Yb | 151Yb |
| 71 | 158Lu | 151Lu |
| 72 | 159Hf | |
| 73 | 160Ta | |
| 74 | 161W | |
| 75 | 162Re | |
| 76 | 163Os | |
| 77 | 164Ir | |
| 78 | 165Pt | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/gadolinium-151
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