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Chromium-46

Properties and data of the isotope 46Cr.


Content

See also: list of Chromium isotopes.

 

General data

Name of the isotope:Chromium-46; Cr-46Symbol:46Cr or 4624CrMass number A:46 (= number of nucleons)Atomic number Z:24 (= number of protons)Neutrons N:22Isotopic mass:45.968359(21) u (atomic weight of Chromium-46)Nuclide mass:45.9551934 u (calculated nuclear mass without electrons)Mass excess:-29.4734 MeVMass defect:0.41006992000001 u (per nucleus)Nuclear binding energy:381.97767006 MeV (per nucleus)
8.30386239 MeV (average binding energy per nucleon)
Separation energy:SN = 18.03(40) MeV (first neutron)
SP = 4.875(11) MeV (first proton)
Half-life:0.26(6) sDecay constant λ:2.6659506944613 s-1Specific activity α:3.567717912820 × 10+22 Bq g-1
964248084546.08 Ci g-1
Spin and parity:
(nuclear angular momentum)
0+Mirror nucleus:Titanium-46Year of discovery:1972

 

Radioactive Decay

Half-life T½ = 0.26(6) s respectively 2.6 × 10-1 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
EC β+46V100 %7.604(11) MeV

 

Parent Nuclides

Direct parent isotope is: 46Mn.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 22) and isobaric (same nucleon number A = 46) with Chromium-46. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 22Isobar A = 46
931F
1032Ne
1133Na
1234Mg
1335Al
1436Si
1537P46P
1638S46S
1739Cl46Cl
1840Ar46Ar
1941K46K
2042Ca46Ca
2143Sc46Sc
2244Ti46Ti
2345V46V
2446Cr46Cr
2547Mn46Mn
2648Fe46Fe
2749Co46Co
2850Ni

 

External data and identifiers

Adopted Levels, Gammas:NuDat 46Cr

 


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Last update: 2023-10-04


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