Chromium-62

Properties and data of the isotope ⁶²Cr.

Contents

General data

Name of the isotope:Chromium-62; Cr-62Symbol:⁶²Cr or 6224CrMass number A:62 (= number of nucleons)Atomic number Z:24 (= number of protons)Neutrons N:38Isotopic mass:61.95610(16) u (atomic weight of Chromium-62)Nuclide mass:61.9429344 u (calculated nuclear mass without electrons)Mass excess:-40.89259 MeVMass defect:0.560967576 u (per nucleus)Nuclear binding energy:522.53793124 MeV (per nucleus)
8.42803115 MeV (average binding energy per nucleon)Separation energy:S_N = 6.49(18) MeV (first neutron)
S_P = 17.68(91) MeV (first proton)Half-life:206(12) msDecay constant λ:3.3647921386405 s^-1Specific activity α:3.321844626770 × 10⁺²² Bq g^-1
897795845073.16 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1985

Radioactive Decay

Half-life T_½ = 206(12) ms respectively 2.06 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶²Mn	100 %	7.63(15) MeV
β^- , n	⁶¹Mn	?	2.78(15) MeV

Parent Nuclides

Direct parent isotope is: ⁶²V.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 38) and isobaric (same nucleon number A = 62) with Chromium-62. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 38	Isobar A = 62
20	⁵⁸Ca
21	⁵⁹Sc
22	⁶⁰Ti	⁶²Ti
23	⁶¹V	⁶²V
24	⁶²Cr	⁶²Cr
25	⁶³Mn	⁶²Mn
26	⁶⁴Fe	⁶²Fe
27	⁶⁵Co	⁶²Co
28	⁶⁶Ni	⁶²Ni
29	⁶⁷Cu	⁶²Cu
30	⁶⁸Zn	⁶²Zn
31	⁶⁹Ga	⁶²Ga
32	⁷⁰Ge	⁶²Ge
33	⁷¹As	⁶²As
34	⁷²Se
35	⁷³Br
36	⁷⁴Kr
37	⁷⁵Rb
38	⁷⁶Sr
39	⁷⁷Y
40	⁷⁸Zr