Cadmium-111m

Properties and data of the isotope ^111mCd.

Content

General data

Name of the isotope:Cadmium-111m; Cd-111mSymbol:^111mCd or 111m48CdMass number A:111 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:63Isotopic mass:110.904183(4) u (atomic weight of Cadmium-111m)
Excitation energy: 396.214(21) keVNuclide mass:110.8778526 u (calculated nuclear mass without electrons)Mass excess:-89.25296 MeVMass defect:1.017308244 u (per nucleus)Nuclear binding energy:947.61652544 MeV (per nucleus)
8.53708581 MeV (average binding energy per nucleon)Half-life:48.50(9) minDecay constant λ:0.00023819490740892 s^-1Specific activity α:1.304039349578 × 10⁺¹⁸ Bq g^-1
35244306.745359 Ci g^-1Spin and parity:
(nuclear angular momentum)11/2-Magnetic dipole moment:μ(μ_N) = -1.1051(4)Quadrupole moment Q:-0.85(9) barn (100 fm²)Nuclear g-factor:g_l = -0.20092727272727

Radioactive Decay

Half-life T_½ = 48.50(9) min (minutes) respectively 2.910 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	¹¹¹Cd	100 %

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
¹¹¹Cd		stable	1/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 63) and isobaric (same nucleon number A = 111) with Cadmium-111m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 63	Isobar A = 111
35	⁹⁸Br
36	⁹⁹Kr
37	¹⁰⁰Rb
38	¹⁰¹Sr
39	¹⁰²Y
40	¹⁰³Zr	¹¹¹Zr
41	¹⁰⁴Nb	¹¹¹Nb
42	¹⁰⁵Mo	¹¹¹Mo
43	¹⁰⁶Tc	¹¹¹Tc
44	¹⁰⁷Ru	¹¹¹Ru
45	¹⁰⁸Rh	¹¹¹Rh
46	¹⁰⁹Pd	¹¹¹Pd
47	¹¹⁰Ag	¹¹¹Ag
48	¹¹¹Cd	¹¹¹Cd
49	¹¹²In	¹¹¹In
50	¹¹³Sn	¹¹¹Sn
51	¹¹⁴Sb	¹¹¹Sb
52	¹¹⁵Te	¹¹¹Te
53	¹¹⁶I	¹¹¹I
54	¹¹⁷Xe	¹¹¹Xe
55	¹¹⁸Cs
56	¹¹⁹Ba
57	¹²⁰La
58	¹²¹Ce
59	¹²²Pr