Chromium-60

Properties and data of the isotope ⁶⁰Cr.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Chromium-60; Cr-60Symbol:⁶⁰Cr or 6024CrMass number A:60 (= number of nucleons)Atomic number Z:24 (= number of protons)Neutrons N:36Isotopic mass:59.94990(21) u (atomic weight of Chromium-60)Nuclide mass:59.9367344 u (calculated nuclear mass without electrons)Mass excess:-46.66785 MeVMass defect:0.549837744 u (per nucleus)Nuclear binding energy:512.17055951 MeV (per nucleus)
8.53617599 MeV (average binding energy per nucleon)Half-life:0.49(1) sDecay constant λ:1.4145860827754 s^-1Specific activity α:1.443870618471 × 10⁺²² Bq g^-1
390235302289.49 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1980

Radioactive Decay

Half-life T_½ = 0.49(1) s respectively 4.9 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁰Mn		6.30(19) MeV
β^-, n	⁵⁹Mn	?	0.78(19) MeV

Parent Nuclides

Direct parent isotope is: ⁶⁰V.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 36) and isobaric (same nucleon number A = 60) with Chromium-60. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 36	Isobar A = 60
19	⁵⁵K
20	⁵⁶Ca
21	⁵⁷Sc	⁶⁰Sc
22	⁵⁸Ti	⁶⁰Ti
23	⁵⁹V	⁶⁰V
24	⁶⁰Cr	⁶⁰Cr
25	⁶¹Mn	⁶⁰Mn
26	⁶²Fe	⁶⁰Fe
27	⁶³Co	⁶⁰Co
28	⁶⁴Ni	⁶⁰Ni
29	⁶⁵Cu	⁶⁰Cu
30	⁶⁶Zn	⁶⁰Zn
31	⁶⁷Ga	⁶⁰Ga
32	⁶⁸Ge	⁶⁰Ge
33	⁶⁹As
34	⁷⁰Se
35	⁷¹Br
36	⁷²Kr
37	⁷³Rb
38	⁷⁴Sr