30 Zinc 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 +--------------------+ | 30 _____ | | |__ /_ __ | | / /| '_ \ | | / /_| | | | | | /____|_| |_| | | | | Zinc | | 65.4 u | +--------------------+ Electron Configuration: [Ar]4s2 3d10 Electronegativity: 1.65 Atomic Radius: 139 pm Ionization Energy: 9.394 eV Electron Affinity: Oxidation States: 2 Standard State: Solid Melting Point: 692.68 K Boiling Point: 1180 K Density: 7.134 g/cm3 Family: Transition metal Year Discovered: 1746 Number of Neutrons: 35 Number of Protons: 30 Number of Electrons: 30 Number of Valence: Valency: Group: 12 Period: 4 Shell: d-shell Specific Heat: 0.388 J/g K Radioactive: 0 Occurrence: Natural Source: Dying high-mass stars Source: White dwarf supernovae