Antimony-124m3

Properties and data of the isotope ¹²⁴Sb.

Content

General data

Name of the isotope:Antimony-124m3; Sb-124m3Symbol:¹²⁴Sb or 12451SbMass number A:124 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:73Isotopic mass:123.9059358(16) u (atomic weight of Antimony-124m3)
Excitation energy: 40.8038(7) keVNuclide mass:123.8779599 u (calculated nuclear mass without electrons)Mass excess:-87.62024 MeVMass defect:1.1256797 u (per nucleus)Nuclear binding energy:1048.56388647 MeV (per nucleus)
8.45616037 MeV (average binding energy per nucleon)Half-life:3.2(3) μsDecay constant λ:216608.49392498 s^-1Specific activity α:1.060525903963 × 10⁺²⁷ Bq g^-1
2.866286226928 × 10⁺¹⁶ Ci g^-1Spin and parity:
(nuclear angular momentum)3+.4+Magnetic dipole moment:μ(μ_N) = +2.970(33)

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
¹²⁴Sb		60.20(3) d	3-
^124m1Sb	10.8627(8) keV	93(5) s	5+
^124m2Sb	36.8440(14) keV	20.2(2) min	(8)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 73) and isobaric (same nucleon number A = 124) with Antimony-124m3. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 73	Isobar A = 124
41	¹¹⁴Nb
42	¹¹⁵Mo
43	¹¹⁶Tc
44	¹¹⁷Ru	¹²⁴Ru
45	¹¹⁸Rh	¹²⁴Rh
46	¹¹⁹Pd	¹²⁴Pd
47	¹²⁰Ag	¹²⁴Ag
48	¹²¹Cd	¹²⁴Cd
49	¹²²In	¹²⁴In
50	¹²³Sn	¹²⁴Sn
51	¹²⁴Sb	¹²⁴Sb
52	¹²⁵Te	¹²⁴Te
53	¹²⁶I	¹²⁴I
54	¹²⁷Xe	¹²⁴Xe
55	¹²⁸Cs	¹²⁴Cs
56	¹²⁹Ba	¹²⁴Ba
57	¹³⁰La	¹²⁴La
58	¹³¹Ce	¹²⁴Ce
59	¹³²Pr	¹²⁴Pr
60	¹³³Nd	¹²⁴Nd
61	¹³⁴Pm
62	¹³⁵Sm
63	¹³⁶Eu
64	¹³⁷Gd
65	¹³⁸Tb
66	¹³⁹Dy
67	¹⁴⁰Ho