Uranium-236m1

Properties and data of the isotope ^236m1U.

Contents

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

General data

Name of the isotope:Uranium-236m1; U-236m1Symbol:^236m1U or 236m192UMass number A:236 (= number of nucleons)Atomic number Z:92 (= number of protons)Neutrons N:144Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5652173913043 (= neutron-proton ratio)Neutron excess (N-Z):52Excitation energy:1052.89(19) keVIsotopic mass:236.0455662(12) u (atomic weight of Uranium-236m1)Nuclide mass:235.9951035 u (calculated nuclear mass without electrons)Mass excess:42.44464 MeVMass defect:1.922084648 u (per nucleus)Nuclear binding energy:1790.4103171 MeV (per nucleus)
7.58648439 MeV (average binding energy per nucleon)Half-life:100(4) nsDecay constant λ:6931471.8055995 s^-1Specific activity α:1.768741507627 × 10⁺²⁸ Bq g^-1
4.780382453046 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)(4)-

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
²³⁶U		2.342(4) × 10⁷ a	0+
^236m2U	2750(3) keV	120(2) ns	(0+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 144) and isobaric (same nucleon number A = 236) with Uranium-236m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 144	Isobar A = 236
85	²²⁹At
86	²³⁰Rn
87	²³¹Fr
88	²³²Ra
89	²³³Ac	²³⁶Ac
90	²³⁴Th	²³⁶Th
91	²³⁵Pa	²³⁶Pa
92	²³⁶U	²³⁶U
93	²³⁷Np	²³⁶Np
94	²³⁸Pu	²³⁶Pu
95	²³⁹Am	²³⁶Am
96	²⁴⁰Cm	²³⁶Cm
97	²⁴¹Bk	²³⁶Bk
98	²⁴²Cf
99	²⁴³Es
100	²⁴⁴Fm
101	²⁴⁵Md