Ketcher 06071810112D 1 1.00000 0.00000 0 1 0 0 0 0 999 V2000 5.7250 -4.6250 0.0000 Rg 0 0 0 0 0 0 0 0 0 0 0 0 M END > CHEBI:33368 > roentgenium atom > A copper group element atom with atomic number 111. The the ninth member of the 6d series of transition metals, it is an extremely radioactive, synthetic element. Average mass is around 281. > 3 > Uuu; unununium; Roentgenium; roentgenium; roentgenio; Rg; 111Rg > roentgenium > Rg > 0.000 > 0.00000 > 0 > [Rg] > InChI=1S/Rg > LJROPTGWFUZRDB-UHFFFAOYSA-N > Rg > Roentgenium $$$$