Cadmium-124

Properties and data of the isotope ¹²⁴Cd.

Content

General data

Name of the isotope:Cadmium-124; Cd-124Symbol:¹²⁴Cd or 12448CdMass number A:124 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:76Isotopic mass:123.917657(3) u (atomic weight of Cadmium-124)Nuclide mass:123.8913266 u (calculated nuclear mass without electrons)Mass excess:-76.70201 MeVMass defect:1.116478152 u (per nucleus)Nuclear binding energy:1039.99269972 MeV (per nucleus)
8.3870379 MeV (average binding energy per nucleon)Separation energy:S_N = 7.359(4) MeV (first neutron)
S_P = 14.44(3) MeV (first proton)Half-life:1.25(2) sDecay constant λ:0.55451774444796 s^-1Specific activity α:2.714946314146 × 10⁺²¹ Bq g^-1
73376927409.359 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1974

Radioactive Decay

Half-life T_½ = 1.25(2) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹²⁴In	100 %	4.17(3) MeV

Parent Nuclides

Direct parent isotopes are: ¹²⁴Ag, ¹²⁵Ag.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 76) and isobaric (same nucleon number A = 124) with Cadmium-124. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 76	Isobar A = 124
42	¹¹⁸Mo
43	¹¹⁹Tc
44	¹²⁰Ru	¹²⁴Ru
45	¹²¹Rh	¹²⁴Rh
46	¹²²Pd	¹²⁴Pd
47	¹²³Ag	¹²⁴Ag
48	¹²⁴Cd	¹²⁴Cd
49	¹²⁵In	¹²⁴In
50	¹²⁶Sn	¹²⁴Sn
51	¹²⁷Sb	¹²⁴Sb
52	¹²⁸Te	¹²⁴Te
53	¹²⁹I	¹²⁴I
54	¹³⁰Xe	¹²⁴Xe
55	¹³¹Cs	¹²⁴Cs
56	¹³²Ba	¹²⁴Ba
57	¹³³La	¹²⁴La
58	¹³⁴Ce	¹²⁴Ce
59	¹³⁵Pr	¹²⁴Pr
60	¹³⁶Nd	¹²⁴Nd
61	¹³⁷Pm
62	¹³⁸Sm
63	¹³⁹Eu
64	¹⁴⁰Gd
65	¹⁴¹Tb
66	¹⁴²Dy
67	¹⁴³Ho
68	¹⁴⁴Er
69	¹⁴⁵Tm