Hassium-271

Properties and data of the isotope ²⁷¹Hs.

Contents

General data

Name of the isotope:Hassium-271; Hs-271Symbol:²⁷¹Hs or 271108HsMass number A:271 (= number of nucleons)Atomic number Z:108 (= number of protons)Neutrons N:163Isotopic mass:271.13717(32) u (atomic weight of Hassium-271)Nuclide mass:271.0779331 u (calculated nuclear mass without electrons)Mass excess:127.77303 MeVMass defect:2.120314764 u (per nucleus)Nuclear binding energy:1975.06048078 MeV (per nucleus)
7.28804605 MeV (average binding energy per nucleon)Half-life:4 sDecay constant λ:0.17328679513999 s^-1Specific activity α:3.850765643911 × 10⁺²⁰ Bq g^-1
10407474713.274 Ci g^-1Spin and parity:
(nuclear angular momentum)

Radioactive Decay

Half-life T_½ = 4 s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	²⁶⁷Sg

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 163) and isobaric (same nucleon number A = 271) with Hassium-271. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 163	Isobar A = 271
103	²⁶⁶Lr
104	²⁶⁷Rf
105	²⁶⁸Db
106	²⁶⁹Sg	²⁷¹Sg
107	²⁷⁰Bh	²⁷¹Bh
108	²⁷¹Hs	²⁷¹Hs
109	²⁷²Mt	²⁷¹Mt
110	²⁷³Ds	²⁷¹Ds
111	²⁷⁴Rg