Rhodium-124
Properties and data of the isotope 124Rh.
See also: List of individual Rhodium isotopes (and general data sources).
General data
Name of the isotope:Rhodium-124; Rh-124Symbol:124Rh or 12445RhMass number A:124 (= number of nucleons)Atomic number Z:45 (= number of protons)Neutrons N:79Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.7555555555556 (= neutron-proton ratio)Neutron excess (N-Z):34Isotopic mass:123.95181(43) u (atomic weight of Rhodium-124)Nuclide mass:123.9271252 u (calculated nuclear mass without electrons)Mass excess:-44.8887 MeVMass defect:1.084844804 u (per nucleus)Nuclear binding energy:1010.52642586 MeV (per nucleus)
8.14940666 MeV (average binding energy per nucleon)Separation energy:SN = 3.60(56) MeV (first neutron)
SP = 15.10(64) MeV (first proton)Half-life:30(2) msDecay constant λ:23.104906018665 s-1Specific activity α:1.131227630894 × 10+23 Bq g-1
3057371975390 Ci g-1Spin and parity:
(nuclear angular momentum)Year of discovery:2010
Radioactive Decay
Half-life T½ = 30(2) ms respectively 3.0 × 10-2 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 124Pd | 100 % | 13.50(50) MeV | |
| β-, n | 123Pd | ? | 7.47(88) MeV | |
| β-, 2n | 122Pd | ? | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 79) and isobaric (same nucleon number A = 124) with Rhodium-124. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 79 | Isobar A = 124 |
|---|
| 44 | 123Ru | 124Ru |
| 45 | 124Rh | 124Rh |
| 46 | 125Pd | 124Pd |
| 47 | 126Ag | 124Ag |
| 48 | 127Cd | 124Cd |
| 49 | 128In | 124In |
| 50 | 129Sn | 124Sn |
| 51 | 130Sb | 124Sb |
| 52 | 131Te | 124Te |
| 53 | 132I | 124I |
| 54 | 133Xe | 124Xe |
| 55 | 134Cs | 124Cs |
| 56 | 135Ba | 124Ba |
| 57 | 136La | 124La |
| 58 | 137Ce | 124Ce |
| 59 | 138Pr | 124Pr |
| 60 | 139Nd | 124Nd |
| 61 | 140Pm | |
| 62 | 141Sm | |
| 63 | 142Eu | |
| 64 | 143Gd | |
| 65 | 144Tb | |
| 66 | 145Dy | |
| 67 | 146Ho | |
| 68 | 147Er | |
| 69 | 148Tm | |
| 70 | 149Yb | |
| 71 | 150Lu | |
External data and identifiers
Last update: 2020-10-15
Perma link: https://www.chemlin.org/isotope/rhodium-124
© 1996 - 2026 ChemLin
