 1 / 2 valence electron configuration , the 0 oxidation state should also be more stable for flerovium than for lead , as the 7p1 / 2 electrons begin to also exhibit a mild inert pair effect : this stabilization of the neutral state may bring about some similarities between the behaviour of flerovium and the noble gas radon . Due to the expected relative inertness of flerovium , its diatomic compounds <unk> and <unk> should have lower energies of dissociation than the corresponding lead compounds <unk> and <unk> . Flerovium ( IV ) should be even more electronegative than lead ( IV ) ; lead ( IV ) has electronegativity 2 @.@ 33 on the Pauling scale ; the lead ( II ) value is only 1 @.@ 87 . 
