Tin-100

Properties and data of the isotope ¹⁰⁰Sn.

Contents

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

General data

Name of the isotope:Tin-100; Sn-100Symbol:¹⁰⁰Sn or 10050SnMass number A:100 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:50Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1 (= neutron-proton ratio)Neutron excess (N-Z):0Isotopic mass:99.93850(32) u (atomic weight of Tin-100)Nuclide mass:99.9110726 u (calculated nuclear mass without electrons)Mass excess:-57.28688 MeVMass defect:0.88599739999999 u (per nucleus)Nuclear binding energy:825.30126212 MeV (per nucleus)
8.25301262 MeV (average binding energy per nucleon)Separation energy:S_N = 17.41(59) MeV (first neutron)
S_P = 3.20(42) MeV (first proton)Half-life:1.16(20) sDecay constant λ:0.5975406728965 s^-1Specific activity α:3.634822324973 × 10⁺²¹ Bq g^-1
98238441215.511 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1994

Radioactive Decay

Half-life T_½ = 1.16(20) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹⁰⁰In	> 83 %	7.03(35) MeV
EC, p	⁹⁹Cd	< 17 %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 50) and isobaric (same nucleon number A = 100) with Tin-100. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 50	Isobar A = 100
28	⁷⁸Ni
29	⁷⁹Cu
30	⁸⁰Zn
31	⁸¹Ga
32	⁸²Ge
33	⁸³As
34	⁸⁴Se
35	⁸⁵Br
36	⁸⁶Kr	¹⁰⁰Kr
37	⁸⁷Rb	¹⁰⁰Rb
38	⁸⁸Sr	¹⁰⁰Sr
39	⁸⁹Y	¹⁰⁰Y
40	⁹⁰Zr	¹⁰⁰Zr
41	⁹¹Nb	¹⁰⁰Nb
42	⁹²Mo	¹⁰⁰Mo
43	⁹³Tc	¹⁰⁰Tc
44	⁹⁴Ru	¹⁰⁰Ru
45	⁹⁵Rh	¹⁰⁰Rh
46	⁹⁶Pd	¹⁰⁰Pd
47	⁹⁷Ag	¹⁰⁰Ag
48	⁹⁸Cd	¹⁰⁰Cd
49	⁹⁹In	¹⁰⁰In
50	¹⁰⁰Sn	¹⁰⁰Sn