Bromine vs Californium

PropertyBr BromineCf Californium
Atomic number3598
SymbolBrCf
NameBromineCalifornium
Categoryhalogenactinide
Standard Atomic Weight79.904 u251 u
Period47
Group17N/A
Blockps
Phase at STPliquidsolid
Electron configuration[Ar]4s23d104p5[Rn]7s25f10
Oxidation states[-1, 1, 2, 3, 4, 5, 7][2, 3, 4, 5]
Electronegativity (Pauling)2.961.3
Electron affinity3.3635 eV-0.5 eV
Density3102.8 kg/m³1.510000e+4 kg/m³
Melting point-7.2 °C899.85 °C
Boiling point58.8 °C-273.15 °C
Discovery year18251950