 2 ) in aqueous solution , analogous to plumbite . Flerovium ( II ) sulfate ( FlSO4 ) and sulfide ( FlS ) should be very insoluble in water , and flerovium ( II ) acetate ( FlC2H3O2 ) and nitrate ( Fl ( NO3 ) 2 ) should be quite water @-@ soluble . The standard electrode potential for the reduction of Fl2 + ions to metallic flerovium is estimated to be around + 0 @.@ 9 V , confirming the increased stability of flerovium in the neutral state . In general , due to the relativistic stabilization of the 7p1 / 2 spinor , Fl2 + is expected to have properties intermediate between those of Hg2 + or Cd2 + and its lighter congener Pb2 + . 
