Tin-111

Properties and data of the isotope ¹¹¹Sn.

Contents

General data

Name of the isotope:Tin-111; Sn-111Symbol:¹¹¹Sn or 11150SnMass number A:111 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:61Isotopic mass:110.907741(6) u (atomic weight of Tin-111)Nuclide mass:110.8803136 u (calculated nuclear mass without electrons)Mass excess:-85.9387 MeVMass defect:1.012070476 u (per nucleus)Nuclear binding energy:942.73757597 MeV (per nucleus)
8.49313132 MeV (average binding energy per nucleon)Separation energy:S_N = 8.168(15) MeV (first neutron)
S_P = 6.758(13) MeV (first proton)Half-life:35.3(6) minDecay constant λ:0.00032726495777146 s^-1Specific activity α:1.791668794746 × 10⁺¹⁸ Bq g^-1
48423480.939089 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2+Magnetic dipole moment:μ(μ_N) = + 0.607(4)Quadrupole moment Q:0.18(9) barn (100 fm²)Gyromagnetic ratio γ:18(9) · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 0.17342857142857Charge radius:4.5836(23) femtometer fmYear of discovery:1949

Radioactive Decay

Half-life T_½ = 35.3(6) min (minutes) respectively 2.118 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹¹¹In	100 %	2.453(6) MeV

Parent Nuclides

Direct parent isotope is: ¹¹¹Sb.

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
^111mSn	254.71(4) keV	12.5(10) μs	1/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 61) and isobaric (same nucleon number A = 111) with Tin-111. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 61	Isobar A = 111
34	⁹⁵Se
35	⁹⁶Br
36	⁹⁷Kr
37	⁹⁸Rb
38	⁹⁹Sr
39	¹⁰⁰Y
40	¹⁰¹Zr	¹¹¹Zr
41	¹⁰²Nb	¹¹¹Nb
42	¹⁰³Mo	¹¹¹Mo
43	¹⁰⁴Tc	¹¹¹Tc
44	¹⁰⁵Ru	¹¹¹Ru
45	¹⁰⁶Rh	¹¹¹Rh
46	¹⁰⁷Pd	¹¹¹Pd
47	¹⁰⁸Ag	¹¹¹Ag
48	¹⁰⁹Cd	¹¹¹Cd
49	¹¹⁰In	¹¹¹In
50	¹¹¹Sn	¹¹¹Sn
51	¹¹²Sb	¹¹¹Sb
52	¹¹³Te	¹¹¹Te
53	¹¹⁴I	¹¹¹I
54	¹¹⁵Xe	¹¹¹Xe
55	¹¹⁶Cs
56	¹¹⁷Ba
57	¹¹⁸La
58	¹¹⁹Ce