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
Electron Configuration: [Rn]7s2 5f6
Electronegativity: 1.28
Atomic Radius: 243 pm
Ionization Energy: 6.06 eV
Electron Affinity:
Oxidation States: +6, +5, +4, +3
Standard State: Solid
Melting Point: 913 K
Boiling Point: 3501 K
Density: 19.84 g/cm3
Family: Actinide
Year Discovered: 1940
Number of Neutrons: 150
Number of Protons: 94
Number of Electrons: 94
Number of Valence:
Valency:
Group:
Period: 7
Shell: f-shell
Specific Heat:
Radioactive: 1
Occurrence: Rare
Source: Merging neutron stars