# Inner electrons 163 # Outer electrons 105 # Protons 268 An-Isotope 105:268 Approval Stats BE - Actual 1963.90 BE - Nucleon 7328.00 Decay SF 100, EC+B+, A Element Dubnium Half Life 28 h Mass Actual 268.13 Mass Calculated 270.10 Mass H Norm 266.04 Stability Unstable
