Roentgenium - Rg
Chemical properties of roentgenium - Health effects of Roentgenium - Environmental effects of Roentgenium
|Atomic mass||271.8 g.mol -1|
|Electronegativity acoording to Pauling||unknown|
|Electronic shell||[ Rn] 7s1 5f14 6d10|
|Discovered||Hofmann, Sigurd 1994|
From its position in the periodic table, in group 11 below gold, this element should have the physical properties of a noble metal and, were it long enough lived it should be possible to make compound of it although, like gold, it might be reluctant to form them. Its appearance is unknown, probably it is yellow or orange metallic (like gold).
As it is so unstable, any amount formed would decompose to other elements so quickly that there’s no reason to study its effects on human health.
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