| Characteristics | |||||
|---|---|---|---|---|---|
| |||||
| Admitted characteristics | |||||
| Name, symbol, ordinal number | Hassium, Hs, 108 | ||||
| Series | Transition metals | ||||
| Group, period, block | 8, 7, D | ||||
| Appearance | unknown | ||||
| Atomic mass | 269 | ||||
| Elektronenkonfiguration | probably [Rn] based on osmium | ||||
| Electrons per energy level | 2, 8, 18, 32, 32, 14, 2 | ||||
| State of aggregation | unknown | ||||
| As far as possible and common, SI-UNITs are used. If not differently notes, the indicated data apply with standard conditions. | |||||
Hassium is a chemical element with the nuclear charge number of 108 and the symbol Hs. It ranks among the Transactinoiden. It is called also Eka osmium. In the periodic system it ranks among 8. Nebengruppe.
Hassium became for the first time to 23. March 1984 at the society for heavy ion research (GSI) in Darmstadt by fusion of lead with iron produces. It got first the name Unniloctium (symbol UN). The 1994er recommendation of the IUPAC (see element naming controversy) for the name was Hahnium (after Otto cock). Since 1997 it carries its current name, which is derived from latin name Hassia for the Land of the Federal Republic Hessen.
Hassium is extremely short-lived like most Transactinoiden and possession a radioactive half-life of 2 milliseconds.
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