Silver-124

Properties and data of the isotope ¹²⁴Ag.

Content

General data

Name of the isotope:Silver-124; Ag-124Symbol:¹²⁴Ag or 12447AgMass number A:124 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:77Isotopic mass:123.92893(27) u (atomic weight of Silver-124)Nuclide mass:123.9031481 u (calculated nuclear mass without electrons)Mass excess:-66.20128 MeVMass defect:1.106045036 u (per nucleus)Nuclear binding energy:1030.27431476 MeV (per nucleus)
8.30866383 MeV (average binding energy per nucleon)Separation energy:S_N = 4.72(25) MeV (first neutron)
S_P = 13.06(83) MeV (first proton)Half-life:191(28) msDecay constant λ:3.6290428301568 s^-1Specific activity α:1.77679732601 × 10⁺²² Bq g^-1
480215493516.76 Ci g^-1Spin and parity:
(nuclear angular momentum)(3+)Year of discovery:1984

Radioactive Decay

Half-life T_½ = 191(28) ms respectively 1.91 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹²⁴Cd	98.7 %	10.50(25) MeV
β^-, n	¹²³Cd	1.3(9) %	3.14(25) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 77) and isobaric (same nucleon number A = 124) with Silver-124. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 77	Isobar A = 124
43	¹²⁰Tc
44	¹²¹Ru	¹²⁴Ru
45	¹²²Rh	¹²⁴Rh
46	¹²³Pd	¹²⁴Pd
47	¹²⁴Ag	¹²⁴Ag
48	¹²⁵Cd	¹²⁴Cd
49	¹²⁶In	¹²⁴In
50	¹²⁷Sn	¹²⁴Sn
51	¹²⁸Sb	¹²⁴Sb
52	¹²⁹Te	¹²⁴Te
53	¹³⁰I	¹²⁴I
54	¹³¹Xe	¹²⁴Xe
55	¹³²Cs	¹²⁴Cs
56	¹³³Ba	¹²⁴Ba
57	¹³⁴La	¹²⁴La
58	¹³⁵Ce	¹²⁴Ce
59	¹³⁶Pr	¹²⁴Pr
60	¹³⁷Nd	¹²⁴Nd
61	¹³⁸Pm
62	¹³⁹Sm
63	¹⁴⁰Eu
64	¹⁴¹Gd
65	¹⁴²Tb
66	¹⁴³Dy
67	¹⁴⁴Ho
68	¹⁴⁵Er
69	¹⁴⁶Tm