last update 01 oct 08
* The elements in the periodic table from Rutherfordium, element 104, on up the table are all very radioactive and transitory.
All were discovered in the postwar period.
element symbol
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rutherfordium * Rf<261/104>
dubnium * Db<262/105>
seaborgium * Sg<266/106>
bohrium * Bh<264/107>
hassium * Hs<269/108>
meitnerium * Mt<268/109>
darmstadtium * Ds<269/110>
roentgenium * Rg<280/111>
ununbium * Uub<285/112>
ununtrium * Uut<284/113>
ununquadium * Uuq<289/114>
ununpentium * Uup<288/115>
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The names of elements with the "unun" prefix are provisional, with the final
name to be determined. The "transactinides" are of no real interest in a
practical chemistry document and are only being mentioned here for the same
of completeness.
