Tennessine-294

Properties and data of the isotope ²⁹⁴Ts.

Content

Tenness-294 is a radioisotope of the chemical element Tennessine, which, in addition to the element-specific 117 protons, has 177 neutrons in the atomic nucleus, resulting in the mass number 294. The very short-lived, only artificially producible, unstable and therefore radioactive nuclide has no practical significance; dealing with ²⁹⁴Ts is for academic purposes only.

General data

Name of the isotope:Tennessine-294; Ts-294Symbol:²⁹⁴Ts or 294117TsMass number A:294 (= number of nucleons)Atomic number Z:117 (= number of protons)Neutrons N:177Isotopic mass:294.21084(64) u (atomic weight of Tennessine-294)Nuclide mass:294.1466678 u (calculated nuclear mass without electrons)Mass excess:196.39619 MeVMass defect:2.238378876 u (per nucleus)Nuclear binding energy:2085.03649272 MeV (per nucleus)
7.09196086 MeV (average binding energy per nucleon)Separation energy:S_N = 6.103(978) MeV (first neutron)
S_P = 1.460(785) MeV (first proton)Half-life:0.051(+38-16) sDecay constant λ:13.59112118745 s^-1Specific activity α:2.783933545418 × 10⁺²² Bq g^-1
752414471734.65 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:2010

Radioactive Decay

Half-life T_½ = 0.051(+38-16) s respectively 5.1 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	²⁹⁰Mc	~ 100 %	11.180(40) MeV

Occurrence

Comparison of the natural Tennessine isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Tennessine Isotopic mixture	294.21046 u	100 %
Isotope ²⁹⁴Ts	294.21084(64) u	100 %	0.051(+38-16) s

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 177) and isobaric (same nucleon number A = 294) with Tennessine-294. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.