Hassium-275

Properties and data of the isotope ²⁷⁵Hs.

Contents

General data

Name of the isotope:Hassium-275; Hs-275Symbol:²⁷⁵Hs or 275108HsMass number A:275 (= number of nucleons)Atomic number Z:108 (= number of protons)Neutrons N:167Isotopic mass:275.14667(63) u (atomic weight of Hassium-275)
Excitation energy: xNuclide mass:275.0874331 u (calculated nuclear mass without electrons)Mass excess:136.62222 MeVMass defect:2.1454744280001 u (per nucleus)Nuclear binding energy:1998.49655684 MeV (per nucleus)
7.26726021 MeV (average binding energy per nucleon)Separation energy:S_N = 4.94(83) MeV (first neutron)
S_P = 4.35(85) MeV (first proton)Half-life:0.15(+27-6) sDecay constant λ:4.620981203733 s^-1Specific activity α:1.011934535272 × 10⁺²² Bq g^-1
273495820343.97 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:2004

Radioactive Decay

Half-life T_½ = 0.15(+27-6) s respectively 1.5 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	²⁷¹Sg	ca. 100 %	9.44(5) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 167) and isobaric (same nucleon number A = 275) with Hassium-275. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 167	Isobar A = 275
107	²⁷⁴Bh	²⁷⁵Bh
108	²⁷⁵Hs	²⁷⁵Hs
109	²⁷⁶Mt	²⁷⁵Mt
110	²⁷⁷Ds	²⁷⁵Ds
111	²⁷⁸Rg	²⁷⁵Rg
112	²⁷⁹Cn
113	²⁸⁰Nh