Noun
a radioactive transuranic element
Source: WordNetAlthough hassium isotopes were first synthesized in 1984, it was not until 1996 that a hassium isotope long-lived enough to allow chemical studies to be performed was synthesized. Source: Internet
During the experiment, 5 hassium atoms were synthesized using the reaction 248 Cm( 26 Mg,5n) 269 Hs. Source: Internet
Chemistry experiments have confirmed that hassium behaves as the heavier homologue to osmium in group 8. The chemical properties of hassium are characterized only partly, but they compare well with the chemistry of the other group 8 elements. Source: Internet
In bulk quantities, hassium is expected to be a silvery metal that reacts readily with oxygen in the air, forming a volatile tetroxide. Source: Internet
In the early 1960s, it was predicted that long-lived deformed isomers of hassium might occur naturally on Earth in trace quantities. Source: Internet
Much like them, hassium is predicted to be a solid at room temperature, although the melting point of hassium has not been precisely calculated. Source: Internet