97 Berkelium H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm[Bk]Cf Es Fm Md No Lr +--------------------+ | 97 ____ _ | | | __ )| | __ | | | _ \| |/ / | | | |_) | < | | |____/|_|\_\ | | | | Berkelium | | 247.07031 u | +--------------------+ Electron Configuration: [Rn]7s2 5f9 Electronegativity: 1.3 Atomic Radius: 244 pm Ionization Energy: 6.23 eV Electron Affinity: Oxidation States: +4, +3 Standard State: Solid Melting Point: 1323 K Boiling Point: Density: 14 g/cm3 Family: Actinide Year Discovered: 1949 Number of Neutrons: 150 Number of Protons: 97 Number of Electrons: 97 Number of Valence: Valency: Group: Period: 7 Shell: f-shell Specific Heat: Radioactive: 1 Occurrence: Rare Source: Human-made