Ytterbium-170m

Properties and data of the isotope ^170mYb.

Contents

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

General data

Name of the isotope:Ytterbium-170m; Yb-170mSymbol:^170mYb or 170m70YbMass number A:170 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:100Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.4285714285714 (= neutron-proton ratio)Neutron excess (N-Z):30Excitation energy:1258.46(14) keVIsotopic mass:169.93477(2) u (atomic weight of Ytterbium-170m)Nuclide mass:169.8963729 u (calculated nuclear mass without electrons)Mass excess:-60.76135 MeVMass defect:1.47947384 u (per nucleus)Nuclear binding energy:1378.12100512 MeV (per nucleus)
8.10659415 MeV (average binding energy per nucleon)Half-life:370(15) nsDecay constant λ:1873370.7582701 s^-1Specific activity α:6.675563662242 × 10⁺²⁷ Bq g^-1
1.804206395200 × 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
¹⁷⁰Yb		stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 100) and isobaric (same nucleon number A = 170) with Ytterbium-170m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 100	Isobar A = 170
57	¹⁵⁷La
58	¹⁵⁸Ce
59	¹⁵⁹Pr
60	¹⁶⁰Nd
61	¹⁶¹Pm
62	¹⁶²Sm
63	¹⁶³Eu
64	¹⁶⁴Gd	¹⁷⁰Gd
65	¹⁶⁵Tb	¹⁷⁰Tb
66	¹⁶⁶Dy	¹⁷⁰Dy
67	¹⁶⁷Ho	¹⁷⁰Ho
68	¹⁶⁸Er	¹⁷⁰Er
69	¹⁶⁹Tm	¹⁷⁰Tm
70	¹⁷⁰Yb	¹⁷⁰Yb
71	¹⁷¹Lu	¹⁷⁰Lu
72	¹⁷²Hf	¹⁷⁰Hf
73	¹⁷³Ta	¹⁷⁰Ta
74	¹⁷⁴W	¹⁷⁰W
75	¹⁷⁵Re	¹⁷⁰Re
76	¹⁷⁶Os	¹⁷⁰Os
77	¹⁷⁷Ir	¹⁷⁰Ir
78	¹⁷⁸Pt	¹⁷⁰Pt
79	¹⁷⁹Au	¹⁷⁰Au
80	¹⁸⁰Hg	¹⁷⁰Hg
81	¹⁸¹Tl
82	¹⁸²Pb