 4 ( X = Cl , Br , I ) are expected to form readily . Fluorine would be able to also form the unstable flerovium ( IV ) analogues . All the flerovium dihalides are expected to be stable ; with the difluoride being water @-@ soluble , spin @-@ orbit effects would destabilize flerovium dihydride ( FlH2 ) by almost 2 @.@ 6 eV ( 250 kJ / mol ) . In solution , flerovium would also form the oxoanion flerovite ( FlO2 − 
