Rutherfordium-262

Properties and data of the isotope ²⁶²Rf.

Content

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: list of Rutherfordium isotopes.

General data

Name of the isotope:Rutherfordium-262; Rf-262Symbol:²⁶²Rf or 262104RfMass number A:262 (= number of nucleons)Atomic number Z:104 (= number of protons)Neutrons N:158Isotopic mass:262.10993(24) u (atomic weight of Rutherfordium-262)Nuclide mass:262.0528866 u (calculated nuclear mass without electrons)Mass excess:102.39914 MeVMass defect:2.072930056 u (per nucleus)Nuclear binding energy:1930.92190958 MeV (per nucleus)
7.36993095 MeV (average binding energy per nucleon)Separation energy:S_N = 7.00(23) MeV (first neutron)
S_P = 4.45(30) MeV (first proton)Half-life:2.3(4) sDecay constant λ:0.30136833937389 s^-1Specific activity α:6.92703278791 × 10⁺²⁰ Bq g^-1
18721710237.619 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1985

Radioactive Decay

Half-life T_½ = 2.3(4) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
SF	div.	≤ 100 %

Parent Nuclides

Direct parent isotope is: ²⁶⁶Sg.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 158) and isobaric (same nucleon number A = 262) with Rutherfordium-262. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 158	Isobar A = 262
98	²⁵⁶Cf
99	²⁵⁷Es
100	²⁵⁸Fm
101	²⁵⁹Md
102	²⁶⁰No	²⁶²No
103	²⁶¹Lr	²⁶²Lr
104	²⁶²Rf	²⁶²Rf
105	²⁶³Db	²⁶²Db
106	²⁶⁴Sg	²⁶²Sg
107	²⁶⁵Bh	²⁶²Bh
108	²⁶⁶Hs
109	²⁶⁷Mt
110	²⁶⁸Ds