Holmium-162m

Properties and data of the isotope ^162mHo.

Contents

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

General data

Name of the isotope:Holmium-162m; Ho-162mSymbol:^162mHo or 162m67HoMass number A:162 (= number of nucleons)Atomic number Z:67 (= number of protons)Neutrons N:95Isotopic mass:161.929101(3) u (atomic weight of Holmium-162m)
Excitation energy: 105.87(6) keVNuclide mass:161.8923493 u (calculated nuclear mass without electrons)Mass excess:-66.04199 MeVMass defect:1.418343164 u (per nucleus)Nuclear binding energy:1321.17814721 MeV (per nucleus)
8.15542066 MeV (average binding energy per nucleon)Half-life:67.0(7) minDecay constant λ:0.00017242467178108 s^-1Specific activity α:6.449476156484 × 10⁺¹⁷ Bq g^-1
17431016.639148 Ci g^-1Spin and parity:
(nuclear angular momentum)6-Magnetic dipole moment:μ(μ_N) = + 3.60(4)Quadrupole moment Q:3.9(7) barn (100 fm²)Nuclear g-factor:g_l = 0.6

Radioactive Decay

Half-life T_½ = 67.0(7) min (minutes) respectively 4.020 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹⁶²Dy	38 %
Iso	¹⁶²Ho	62 %

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
¹⁶²Ho		15.0(10) min	1+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 95) and isobaric (same nucleon number A = 162) with Holmium-162m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 95	Isobar A = 162
55	¹⁵⁰Cs
56	¹⁵¹Ba
57	¹⁵²La
58	¹⁵³Ce
59	¹⁵⁴Pr
60	¹⁵⁵Nd	¹⁶²Nd
61	¹⁵⁶Pm	¹⁶²Pm
62	¹⁵⁷Sm	¹⁶²Sm
63	¹⁵⁸Eu	¹⁶²Eu
64	¹⁵⁹Gd	¹⁶²Gd
65	¹⁶⁰Tb	¹⁶²Tb
66	¹⁶¹Dy	¹⁶²Dy
67	¹⁶²Ho	¹⁶²Ho
68	¹⁶³Er	¹⁶²Er
69	¹⁶⁴Tm	¹⁶²Tm
70	¹⁶⁵Yb	¹⁶²Yb
71	¹⁶⁶Lu	¹⁶²Lu
72	¹⁶⁷Hf	¹⁶²Hf
73	¹⁶⁸Ta	¹⁶²Ta
74	¹⁶⁹W	¹⁶²W
75	¹⁷⁰Re	¹⁶²Re
76	¹⁷¹Os	¹⁶²Os
77	¹⁷²Ir
78	¹⁷³Pt
79	¹⁷⁴Au
80	¹⁷⁵Hg
81	¹⁷⁶Tl