darmstadtium
Noun
Meaning
a radioactive transuranic element
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The GSI, amongst other elements, discovered the chemical element darmstadtium ( atomic number : 110), named after the city in 2003.
Nine different isotopes of darmstadtium have been reported with atomic masses 267, 269–271, 273, 277, and 279–281, although darmstadtium-267 and darmstadtium-280 are unconfirmed.
Stability and half-lives All darmstadtium isotopes are extremely unstable and radioactive; in general, the heavier isotopes are more stable than the lighter.
The atomic radius of darmstadtium is expected to be around 132 pm.
The most stable known darmstadtium isotope, 281 Ds, is also the heaviest known darmstadtium isotope; it has a half-life of 11 seconds.