1.simple description for copper pellets 99.999% Symbol of element is Cu, atomic number is 29, atomic mass is 63.55, Peripheral electron configuration is 3d104s1 and located in the fourth cycle of IB system. atomic radius is 127.8picometer,Cu2 + radius is 72 picometer,the first of ionization energy is 750kJ/mol, electronegativity is 1.9,commom oxidation number is +1,+2. Density is 8.96g/cm3, ...