Cadmium-102

Properties and data of the isotope ¹⁰²Cd.

Content

General data

Name of the isotope:Cadmium-102; Cd-102Symbol:¹⁰²Cd or 10248CdMass number A:102 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:54Isotopic mass:101.9144818(18) u (atomic weight of Cadmium-102)Nuclide mass:101.8881514 u (calculated nuclear mass without electrons)Mass excess:-79.65969 MeVMass defect:0.9290252 u (per nucleus)Nuclear binding energy:865.38139965 MeV (per nucleus)
8.48413137 MeV (average binding energy per nucleon)Separation energy:S_N = 11.8945(22) MeV (first neutron)
S_P = 5.614(5) MeV (first proton)Half-life:5.5(5) minDecay constant λ:0.0021004460016968 s^-1Specific activity α:1.252394226822 × 10⁺¹⁹ Bq g^-1
338484926.1683 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:4.4810(122) femtometer fmYear of discovery:1969

Radioactive Decay

Half-life T_½ = 5.5(5) min (minutes) respectively 3.30 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁰²Ag	100 %	2.587(8) MeV

Parent Nuclides

Direct parent isotope is: ¹⁰²In.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 102) with Cadmium-102. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 54	Isobar A = 102
30	⁸⁴Zn
31	⁸⁵Ga
32	⁸⁶Ge
33	⁸⁷As
34	⁸⁸Se
35	⁸⁹Br
36	⁹⁰Kr
37	⁹¹Rb	¹⁰²Rb
38	⁹²Sr	¹⁰²Sr
39	⁹³Y	¹⁰²Y
40	⁹⁴Zr	¹⁰²Zr
41	⁹⁵Nb	¹⁰²Nb
42	⁹⁶Mo	¹⁰²Mo
43	⁹⁷Tc	¹⁰²Tc
44	⁹⁸Ru	¹⁰²Ru
45	⁹⁹Rh	¹⁰²Rh
46	¹⁰⁰Pd	¹⁰²Pd
47	¹⁰¹Ag	¹⁰²Ag
48	¹⁰²Cd	¹⁰²Cd
49	¹⁰³In	¹⁰²In
50	¹⁰⁴Sn	¹⁰²Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te