Gadolinium-160

Properties and data of the isotope ¹⁶⁰Gd.

Contents

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

General data

Name of the isotope:Gadolinium-160; Gd-160Symbol:¹⁶⁰Gd or 16064GdMass number A:160 (= number of nucleons)Atomic number Z:64 (= number of protons)Neutrons N:96Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5 (= neutron-proton ratio)Neutron excess (N-Z):32Isotopic mass:159.92706(2) u (atomic weight of Gadolinium-160)Nuclide mass:159.8919537 u (calculated nuclear mass without electrons)Mass excess:-67.94317 MeVMass defect:1.405573984 u (per nucleus)Nuclear binding energy:1309.28373265 MeV (per nucleus)
8.18302333 MeV (average binding energy per nucleon)Separation energy:S_N = 7.4515(7) MeV (first neutron)
S_P = 9.188(4) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.1734(44) femtometer fmYear of discovery:1933

Parent Nuclides

Direct parent isotopes are: ¹⁶⁰Eu, ²⁵²Cf.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Gadolinium Isotopic mixture	157.249 u	100 %
Isotope ¹⁵²Gd	151.91980(2) u	0.20(3) %	1.08(8) × 10¹⁴ a	0+
Isotope ¹⁵⁴Gd	153.92087(2) u	2.18(2) %	stable	0+
Isotope ¹⁵⁵Gd	154.92263(2) u	14.80(9) %	stable	3/2-
Isotope ¹⁵⁶Gd	155.92213(2) u	20.47(3) %	stable	0+
Isotope ¹⁵⁷Gd	156.92397(2) u	15.65(4) %	stable	3/2-
Isotope ¹⁵⁸Gd	157.92411(2) u	24.84(8) %	stable	0+
Isotope ¹⁶⁰Gd	159.92706(2) u	21.86(3) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 96) and isobaric (same nucleon number A = 160) with Gadolinium-160. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 96	Isobar A = 160
55	¹⁵¹Cs
56	¹⁵²Ba
57	¹⁵³La
58	¹⁵⁴Ce
59	¹⁵⁵Pr	¹⁶⁰Pr
60	¹⁵⁶Nd	¹⁶⁰Nd
61	¹⁵⁷Pm	¹⁶⁰Pm
62	¹⁵⁸Sm	¹⁶⁰Sm
63	¹⁵⁹Eu	¹⁶⁰Eu
64	¹⁶⁰Gd	¹⁶⁰Gd
65	¹⁶¹Tb	¹⁶⁰Tb
66	¹⁶²Dy	¹⁶⁰Dy
67	¹⁶³Ho	¹⁶⁰Ho
68	¹⁶⁴Er	¹⁶⁰Er
69	¹⁶⁵Tm	¹⁶⁰Tm
70	¹⁶⁶Yb	¹⁶⁰Yb
71	¹⁶⁷Lu	¹⁶⁰Lu
72	¹⁶⁸Hf	¹⁶⁰Hf
73	¹⁶⁹Ta	¹⁶⁰Ta
74	¹⁷⁰W	¹⁶⁰W
75	¹⁷¹Re	¹⁶⁰Re
76	¹⁷²Os	¹⁶⁰Os
77	¹⁷³Ir
78	¹⁷⁴Pt
79	¹⁷⁵Au
80	¹⁷⁶Hg
81	¹⁷⁷Tl
82	¹⁷⁸Pb