Rutherfordium-268

Properties and data of the isotope ²⁶⁸Rf.

Contents

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

General data

Name of the isotope:Rutherfordium-268; Rf-268Symbol:²⁶⁸Rf or 268104RfMass number A:268 (= number of nucleons)Atomic number Z:104 (= number of protons)Neutrons N:164Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5769230769231 (= neutron-proton ratio)Neutron excess (N-Z):60Isotopic mass:268.12397(77) u (atomic weight of Rutherfordium-268)Nuclide mass:268.0669266 u (calculated nuclear mass without electrons)Mass excess:115.47731 MeVMass defect:2.110879552 u (per nucleus)Nuclear binding energy:1966.27163741 MeV (per nucleus)
7.33683447 MeV (average binding energy per nucleon)Half-life:1.4 sDecay constant λ:0.49510512897139 s^-1Specific activity α:1.112534636993 × 10⁺²¹ Bq g^-1
30068503702.53 Ci g^-1Spin and parity:
(nuclear angular momentum)0+

Radioactive Decay

Half-life T_½ = 1.4 s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
SF	^div.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 164) and isobaric (same nucleon number A = 268) with Rutherfordium-268. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 164	Isobar A = 268
104	²⁶⁸Rf	²⁶⁸Rf
105	²⁶⁹Db	²⁶⁸Db
106	²⁷⁰Sg	²⁶⁸Sg
107	²⁷¹Bh	²⁶⁸Bh
108	²⁷²Hs	²⁶⁸Hs
109	²⁷³Mt	²⁶⁸Mt
110	²⁷⁴Ds	²⁶⁸Ds
111	²⁷⁵Rg