Terbium-162

Properties and data of the isotope ¹⁶²Tb.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Terbium-162; Tb-162Symbol:¹⁶²Tb or 16265TbMass number A:162 (= number of nucleons)Atomic number Z:65 (= number of protons)Neutrons N:97Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.4923076923077 (= neutron-proton ratio)Neutron excess (N-Z):32Isotopic mass:161.92949(4) u (atomic weight of Terbium-162)Nuclide mass:161.8938353 u (calculated nuclear mass without electrons)Mass excess:-65.67964 MeVMass defect:1.419633932 u (per nucleus)Nuclear binding energy:1322.38048985 MeV (per nucleus)
8.16284253 MeV (average binding energy per nucleon)Separation energy:S_N = 6.29(4) MeV (first neutron)
S_P = 7.46(4) MeV (first proton)Half-life:7.60(15) minDecay constant λ:0.0015200596064911 s^-1Specific activity α:5.685722401111 × 10⁺¹⁸ Bq g^-1
153668173.00301 Ci g^-1Spin and parity:
(nuclear angular momentum)1-Year of discovery:1965

Radioactive Decay

Half-life T_½ = 7.60(15) min (minutes) respectively 4.56 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁶²Dy	100 %	2.51(4) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶²Gd.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 97) and isobaric (same nucleon number A = 162) with Terbium-162. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 97	Isobar A = 162
55	¹⁵²Cs
56	¹⁵³Ba
57	¹⁵⁴La
58	¹⁵⁵Ce
59	¹⁵⁶Pr
60	¹⁵⁷Nd	¹⁶²Nd
61	¹⁵⁸Pm	¹⁶²Pm
62	¹⁵⁹Sm	¹⁶²Sm
63	¹⁶⁰Eu	¹⁶²Eu
64	¹⁶¹Gd	¹⁶²Gd
65	¹⁶²Tb	¹⁶²Tb
66	¹⁶³Dy	¹⁶²Dy
67	¹⁶⁴Ho	¹⁶²Ho
68	¹⁶⁵Er	¹⁶²Er
69	¹⁶⁶Tm	¹⁶²Tm
70	¹⁶⁷Yb	¹⁶²Yb
71	¹⁶⁸Lu	¹⁶²Lu
72	¹⁶⁹Hf	¹⁶²Hf
73	¹⁷⁰Ta	¹⁶²Ta
74	¹⁷¹W	¹⁶²W
75	¹⁷²Re	¹⁶²Re
76	¹⁷³Os	¹⁶²Os
77	¹⁷⁴Ir
78	¹⁷⁵Pt
79	¹⁷⁶Au
80	¹⁷⁷Hg
81	¹⁷⁸Tl
82	¹⁷⁹Pb