Chromium-46
Properties and data of the isotope 46Cr.
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-1Spin 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 mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EC β+ | 46V | 100 % | 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.
Z | Isotone N = 22 | Isobar A = 46 |
9 | 31F | |
10 | 32Ne | |
11 | 33Na | |
12 | 34Mg | |
13 | 35Al | |
14 | 36Si | |
15 | 37P | 46P |
16 | 38S | 46S |
17 | 39Cl | 46Cl |
18 | 40Ar | 46Ar |
19 | 41K | 46K |
20 | 42Ca | 46Ca |
21 | 43Sc | 46Sc |
22 | 44Ti | 46Ti |
23 | 45V | 46V |
24 | 46Cr | 46Cr |
25 | 47Mn | 46Mn |
26 | 48Fe | 46Fe |
27 | 49Co | 46Co |
28 | 50Ni | |
External data and identifiers
Last update: 2023-10-04
Perma link: https://www.chemlin.org/isotope/chromium-46
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