Radon-196

Properties and data of the isotope ¹⁹⁶Rn.

Contents

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

General data

Name of the isotope:Radon-196; Rn-196Symbol:¹⁹⁶Rn or 19686RnMass number A:196 (= number of nucleons)Atomic number Z:86 (= number of protons)Neutrons N:110Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.2790697674419 (= neutron-proton ratio)Neutron excess (N-Z):24Isotopic mass:196.002116(15) u (atomic weight of Radon-196)Nuclide mass:195.9549438 u (calculated nuclear mass without electrons)Mass excess:1.97104 MeVMass defect:1.623977512 u (per nucleus)Nuclear binding energy:1512.72530856 MeV (per nucleus)
7.71798627 MeV (average binding energy per nucleon)Separation energy:S_N = 11.15(5) MeV (first neutron)
S_P = 1.848(17) MeV (first proton)Half-life:ca. 4.4 msDecay constant λ:157.53345012726 s^-1Specific activity α:4.840248096011 × 10⁺²³ Bq g^-1
13081751610841 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1995

Radioactive Decay

Half-life T_½ = ca. 4.4 ms respectively 4.4 × 10^-3 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁹²Po	99.9(2) %	7.617(9) MeV
EC/β⁺	¹⁹⁶At	ca. 0.06 %	5.89(3) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 110) and isobaric (same nucleon number A = 196) with Radon-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 110	Isobar A = 196
69	¹⁷⁹Tm
70	¹⁸⁰Yb
71	¹⁸¹Lu
72	¹⁸²Hf
73	¹⁸³Ta
74	¹⁸⁴W	¹⁹⁶W
75	¹⁸⁵Re	¹⁹⁶Re
76	¹⁸⁶Os	¹⁹⁶Os
77	¹⁸⁷Ir	¹⁹⁶Ir
78	¹⁸⁸Pt	¹⁹⁶Pt
79	¹⁸⁹Au	¹⁹⁶Au
80	¹⁹⁰Hg	¹⁹⁶Hg
81	¹⁹¹Tl	¹⁹⁶Tl
82	¹⁹²Pb	¹⁹⁶Pb
83	¹⁹³Bi	¹⁹⁶Bi
84	¹⁹⁴Po	¹⁹⁶Po
85	¹⁹⁵At	¹⁹⁶At
86	¹⁹⁶Rn	¹⁹⁶Rn