Tin-124

Properties and data of the isotope ¹²⁴Sn.

Contents

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

General data

Name of the isotope:Tin-124; Sn-124Symbol:¹²⁴Sn or 12450SnMass number A:124 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:74Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.48 (= neutron-proton ratio)Neutron excess (N-Z):24Isotopic mass:123.905277(7) u (atomic weight of Tin-124)Nuclide mass:123.8778496 u (calculated nuclear mass without electrons)Mass excess:-88.23391 MeVMass defect:1.127178384 u (per nucleus)Nuclear binding energy:1049.95990163 MeV (per nucleus)
8.46741856 MeV (average binding energy per nucleon)Separation energy:S_N = 8.4893(24) MeV (first neutron)
S_P = 12.093(20) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.6735(23) femtometer fmYear of discovery:1922

Parent Nuclides

Direct parent isotope is: ¹²⁴In.

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 = 74) and isobaric (same nucleon number A = 124) with Tin-124. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 74	Isobar A = 124
41	¹¹⁵Nb
42	¹¹⁶Mo
43	¹¹⁷Tc
44	¹¹⁸Ru	¹²⁴Ru
45	¹¹⁹Rh	¹²⁴Rh
46	¹²⁰Pd	¹²⁴Pd
47	¹²¹Ag	¹²⁴Ag
48	¹²²Cd	¹²⁴Cd
49	¹²³In	¹²⁴In
50	¹²⁴Sn	¹²⁴Sn
51	¹²⁵Sb	¹²⁴Sb
52	¹²⁶Te	¹²⁴Te
53	¹²⁷I	¹²⁴I
54	¹²⁸Xe	¹²⁴Xe
55	¹²⁹Cs	¹²⁴Cs
56	¹³⁰Ba	¹²⁴Ba
57	¹³¹La	¹²⁴La
58	¹³²Ce	¹²⁴Ce
59	¹³³Pr	¹²⁴Pr
60	¹³⁴Nd	¹²⁴Nd
61	¹³⁵Pm
62	¹³⁶Sm
63	¹³⁷Eu
64	¹³⁸Gd
65	¹³⁹Tb
66	¹⁴⁰Dy
67	¹⁴¹Ho