Tin-112

Properties and data of the isotope ¹¹²Sn.

Contents

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

General data

Name of the isotope:Tin-112; Sn-112Symbol:¹¹²Sn or 11250SnMass number A:112 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:62Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.24 (= neutron-proton ratio)Neutron excess (N-Z):12Isotopic mass:111.904824(4) u (atomic weight of Tin-112)Nuclide mass:111.8773966 u (calculated nuclear mass without electrons)Mass excess:-88.65587 MeVMass defect:1.023652392 u (per nucleus)Nuclear binding energy:953.52606123 MeV (per nucleus)
8.51362555 MeV (average binding energy per nucleon)Separation energy:S_N = 10.788(5) MeV (first neutron)
S_P = 7.552(3) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.5948(22) femtometer fmYear of discovery:1927

Parent Nuclides

Direct parent isotopes are: ¹¹²Sb, ¹¹²In.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Tin Isotopic mixture	118.710 u	100 %
Isotope ¹¹²Sn	111.904824(4) u	0.97(1) %	stable	0+
Isotope ¹¹⁴Sn	113.902783(6) u	0.66(1) %	stable	0+
Isotope ¹¹⁵Sn	114.9033447(1) u	0.34(1) %	stable	1/2+
Isotope ¹¹⁶Sn	115.901743(1) u	14.54(9) %	stable	0+
Isotope ¹¹⁷Sn	116.902954(3) u	7.68(7) %	stable	1/2+
Isotope ¹¹⁸Sn	117.901607(3) u	24.22(9) %	stable	0+
Isotope ¹¹⁹Sn	118.903311(5) u	8.59(4) %	stable	1/2+
Isotope ¹²⁰Sn	119.902202(6) u	32.58(9) %	stable	0+
Isotope ¹²²Sn	121.90344(2) u	4.63(3) %	stable	0+
Isotope ¹²⁴Sn	123.905277(7) u	5.79(5) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 62) and isobaric (same nucleon number A = 112) with Tin-112. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 62	Isobar A = 112
35	⁹⁷Br
36	⁹⁸Kr
37	⁹⁹Rb
38	¹⁰⁰Sr
39	¹⁰¹Y
40	¹⁰²Zr	¹¹²Zr
41	¹⁰³Nb	¹¹²Nb
42	¹⁰⁴Mo	¹¹²Mo
43	¹⁰⁵Tc	¹¹²Tc
44	¹⁰⁶Ru	¹¹²Ru
45	¹⁰⁷Rh	¹¹²Rh
46	¹⁰⁸Pd	¹¹²Pd
47	¹⁰⁹Ag	¹¹²Ag
48	¹¹⁰Cd	¹¹²Cd
49	¹¹¹In	¹¹²In
50	¹¹²Sn	¹¹²Sn
51	¹¹³Sb	¹¹²Sb
52	¹¹⁴Te	¹¹²Te
53	¹¹⁵I	¹¹²I
54	¹¹⁶Xe	¹¹²Xe
55	¹¹⁷Cs	¹¹²Cs
56	¹¹⁸Ba
57	¹¹⁹La
58	¹²⁰Ce
59	¹²¹Pr