Antimony-117

Properties and data of the isotope ¹¹⁷Sb.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Antimony-117; Sb-117Symbol:¹¹⁷Sb or 11751SbMass number A:117 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:66Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.2941176470588 (= neutron-proton ratio)Neutron excess (N-Z):15Isotopic mass:116.904842(9) u (atomic weight of Antimony-117)Nuclide mass:116.8768661 u (calculated nuclear mass without electrons)Mass excess:-88.63911 MeVMass defect:1.066119088 u (per nucleus)Nuclear binding energy:993.08353376 MeV (per nucleus)
8.48789345 MeV (average binding energy per nucleon)Separation energy:S_N = 9.889(10) MeV (first neutron)
S_P = 4.403(8) MeV (first proton)Half-life:2.80(1) hDecay constant λ:6.876460124602 × 10^-5 s^-1Specific activity α:3.569914783456 × 10⁺¹⁷ Bq g^-1
9648418.3336662 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μ_N) = + 3.43(6)Quadrupole moment Q:- 0(2) barn (100 fm²)Nuclear g-factor:g_l = 1.372Year of discovery:1947

Radioactive Decay

Half-life T_½ = 2.80(1) h (hours) respectively 1.0080 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC β⁺	¹¹⁷Sn	83 %	1.758(8) MeV
β⁺		1.7(3) %

Parent Nuclides

Direct parent isotope is: ¹¹⁷Te.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 66) and isobaric (same nucleon number A = 117) with Antimony-117. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 66	Isobar A = 117
37	¹⁰³Rb
38	¹⁰⁴Sr
39	¹⁰⁵Y
40	¹⁰⁶Zr
41	¹⁰⁷Nb
42	¹⁰⁸Mo	¹¹⁷Mo
43	¹⁰⁹Tc	¹¹⁷Tc
44	¹¹⁰Ru	¹¹⁷Ru
45	¹¹¹Rh	¹¹⁷Rh
46	¹¹²Pd	¹¹⁷Pd
47	¹¹³Ag	¹¹⁷Ag
48	¹¹⁴Cd	¹¹⁷Cd
49	¹¹⁵In	¹¹⁷In
50	¹¹⁶Sn	¹¹⁷Sn
51	¹¹⁷Sb	¹¹⁷Sb
52	¹¹⁸Te	¹¹⁷Te
53	¹¹⁹I	¹¹⁷I
54	¹²⁰Xe	¹¹⁷Xe
55	¹²¹Cs	¹¹⁷Cs
56	¹²²Ba	¹¹⁷Ba
57	¹²³La	¹¹⁷La
58	¹²⁴Ce
59	¹²⁵Pr
60	¹²⁶Nd
61	¹²⁷Pm
62	¹²⁸Sm