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    Is unununium really an element?

    Question #69010. Asked by niale. (Jul 29 06 11:48 PM)


    gdec1

    		Temporary name for a synthesized radioactive element of the transactinide series, atomic number 111, relative atomic mass 272. It was detected at the GSI heavy-ion cyclotron, Darmstadt, Germany, in December 1994, when bismuth-209 was bombarded with nickel.

    http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0047711.html

    Jul 29 06, 11:59 PM
    zbeckabee

    		Roentgenium (former temporary name: unununium or eka-gold) is a chemical element in the periodic table that has the symbol Rg (former temporary symbol: Uuu) and atomic number 111 making it one of the super-heavy atoms. It is a synthetic element whose longest-lived isotope has a mass of 280 and a half-life of 3.6 seconds.

    http://en.wikipedia.org/wiki/Unununium

    Jul 30 06, 7:44 AM
    Baloo55th

    		The un-un-un bit is just roughly Latin for one-one-one, in other words, 111. They are using this system for new elements while they argue who or what to name them after.

    Jul 30 06, 1:44 PM

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