Cadmium-112

Properties and data of the isotope ¹¹²Cd.

Contents

See also: List of individual Cadmium isotopes (and general data sources).

General data

Name of the isotope:Cadmium-112; Cd-112Symbol:¹¹²Cd or 11248CdMass number A:112 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:64Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.3333333333333 (= neutron-proton ratio)Neutron excess (N-Z):16Isotopic mass:111.902763(4) u (atomic weight of Cadmium-112)Nuclide mass:111.8764326 u (calculated nuclear mass without electrons)Mass excess:-90.57568 MeVMass defect:1.02739316 u (per nucleus)Nuclear binding energy:957.01056418 MeV (per nucleus)
8.54473718 MeV (average binding energy per nucleon)Separation energy:S_N = 9.39393(28) MeV (first neutron)
S_P = 9.6484(14) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.5944(23) femtometer fmYear of discovery:1925

Parent Nuclides

Direct parent isotopes are: ¹¹²In, ¹¹²Ag.

Occurrence

Comparison of the natural Cadmium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Cadmium Isotopic mixture	112.414 u	100 %
Isotope ¹⁰⁶Cd	105.906460(8) u	1.245(22) %	stable	0+
Isotope ¹⁰⁸Cd	107.904183(8) u	0.888(11) %	stable	0+
Isotope ¹¹⁰Cd	109.903007(4) u	12.470(61) %	stable	0+
Isotope ¹¹¹Cd	110.904183(4) u	12.795(12) %	stable	1/2+
Isotope ¹¹²Cd	111.902763(4) u	24.109(7) %	stable	0+
Isotope ¹¹³Cd	112.904408(3) u	12.227(7) %	8.04(5) × 10¹⁵ a	1/2+
Isotope ¹¹⁴Cd	113.903365(3) u	28.754(81) %	stable	0+
Isotope ¹¹⁶Cd	115.904763(2) u	7.512(54) %	3.3(4) × 10¹⁹ a	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 64) and isobaric (same nucleon number A = 112) with Cadmium-112. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 64	Isobar A = 112
36	¹⁰⁰Kr
37	¹⁰¹Rb
38	¹⁰²Sr
39	¹⁰³Y
40	¹⁰⁴Zr	¹¹²Zr
41	¹⁰⁵Nb	¹¹²Nb
42	¹⁰⁶Mo	¹¹²Mo
43	¹⁰⁷Tc	¹¹²Tc
44	¹⁰⁸Ru	¹¹²Ru
45	¹⁰⁹Rh	¹¹²Rh
46	¹¹⁰Pd	¹¹²Pd
47	¹¹¹Ag	¹¹²Ag
48	¹¹²Cd	¹¹²Cd
49	¹¹³In	¹¹²In
50	¹¹⁴Sn	¹¹²Sn
51	¹¹⁵Sb	¹¹²Sb
52	¹¹⁶Te	¹¹²Te
53	¹¹⁷I	¹¹²I
54	¹¹⁸Xe	¹¹²Xe
55	¹¹⁹Cs	¹¹²Cs
56	¹²⁰Ba
57	¹²¹La
58	¹²²Ce
59	¹²³Pr
60	¹²⁴Nd