Radon-230

Properties and data of the isotope ²³⁰Rn.

Contents

Radon-230 is a radioisotope of the chemical element radon, which has 144 neutrons in its atomic nucleus in addition to the element-specific 86 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 230. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of ²³⁰Rn is exclusively for academic purposes.

The ²³⁰radon nuclide was only detected indirectly in the fragmentation of U nuclei. The data presented here are preliminary.

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

General data

Name of the isotope:Radon-230; Rn-230Symbol:²³⁰Rn or 23086RnMass number A:230 (= number of nucleons)Atomic number Z:86 (= number of protons)Neutrons N:144Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6744186046512 (= neutron-proton ratio)Neutron excess (N-Z):58Isotopic mass:230.04527(22) u (atomic weight of Radon-230)Nuclide mass:229.9980978 u (calculated nuclear mass without electrons)Mass excess:42.16873 MeVMass defect:1.875430656 u (per nucleus)Nuclear binding energy:1746.95240348 MeV (per nucleus)
7.59544523 MeV (average binding energy per nucleon)Half-life:> 300 nsSpin and parity:
(nuclear angular momentum)0+Year of discovery:2010

Radioactive Decay

Half-life T_½ = > 300 ns.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	²³⁰Fr	100 % ?	2.68 MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 144) and isobaric (same nucleon number A = 230) with Radon-230. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 144	Isobar A = 230
85	²²⁹At
86	²³⁰Rn	²³⁰Rn
87	²³¹Fr	²³⁰Fr
88	²³²Ra	²³⁰Ra
89	²³³Ac	²³⁰Ac
90	²³⁴Th	²³⁰Th
91	²³⁵Pa	²³⁰Pa
92	²³⁶U	²³⁰U
93	²³⁷Np	²³⁰Np
94	²³⁸Pu	²³⁰Pu
95	²³⁹Am	²³⁰Am
96	²⁴⁰Cm
97	²⁴¹Bk
98	²⁴²Cf
99	²⁴³Es
100	²⁴⁴Fm
101	²⁴⁵Md