Uranium-224

Properties and data of the isotope ²²⁴U.

Content

General data

Name of the isotope:Uranium-224; U-224Symbol:²²⁴U or 22492UMass number A:224 (= number of nucleons)Atomic number Z:92 (= number of protons)Neutrons N:132Isotopic mass:224.027614(25) u (atomic weight of Uranium-224)Nuclide mass:223.9771513 u (calculated nuclear mass without electrons)Mass excess:25.72228 MeVMass defect:1.836057856 u (per nucleus)Nuclear binding energy:1710.27687652 MeV (per nucleus)
7.63516463 MeV (average binding energy per nucleon)Separation energy:S_N = 8.19(7) MeV (first neutron)
S_P = 3.89(7) MeV (first proton)Half-life:0.84 msDecay constant λ:825.17521495232 s^-1Specific activity α:2.218447044005 × 10⁺²⁴ Bq g^-1
59958028216354 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1991

Radioactive Decay

Half-life T_½ = 0.84 ms respectively 8.4 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	²²⁰Th	100 %	8.628(7) MeV

Parent Nuclides

Direct parent isotope is: ²²⁸Pu.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 132) and isobaric (same nucleon number A = 224) with Uranium-224. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 132	Isobar A = 224
80	²¹²Hg
81	²¹³Tl
82	²¹⁴Pb
83	²¹⁵Bi	²²⁴Bi
84	²¹⁶Po	²²⁴Po
85	²¹⁷At	²²⁴At
86	²¹⁸Rn	²²⁴Rn
87	²¹⁹Fr	²²⁴Fr
88	²²⁰Ra	²²⁴Ra
89	²²¹Ac	²²⁴Ac
90	²²²Th	²²⁴Th
91	²²³Pa	²²⁴Pa
92	²²⁴U	²²⁴U
93	²²⁵Np