This chemical compound is made up of two ions- a copper (II) ion and sulfate ion. Copper (II) ion or cupric ion is denoted by Cu2+ and sulfate ion has an ionic formula of SO4^2-. The overall ionic ... The molecular formula of a compound is defined as: "The formula of a compound which not only expresses the relative number of atoms of each kind but also expresses the actual number of atoms of each element present in one molecule". Zinc was first isolated by Andreas Marggraf in 1746. In its elemental form, zinc has a silver-gray appearance. It is brittle at ordinary temperatures but malleable at 100 °C to 150 °C. It is a fair conductor of electricity, and burns in air at high red producing white clouds of the oxide. Zinc is mined from sulfidic ore deposits. The chemical formula for zinc bicarbonate is Zn(HCO3)2, according to EndMemo. Zinc bicarbonate is also referred to as zinc hydrogen carbonate. Zn is the chemical symbol for zinc, H is the chemical symbol for hydrogen, C is the chemical symbol for carbon, and O is the chemical symbol for oxygen.