The Chemical Formula is an indication of the makeup of a compound in terms of the kinds of atoms and their relative numbers. From the knowledge of oxidation numbers and valence and an understanding of atomic structure, it is possible to write chemical formulas
A chemical formula is a "notation made up of the chemical symbols of the elements present in a compound and numerical subscript that indicate the number of atoms of each element present in a molecule of the compound."A chemical formula provides information about the atomic composition of a substance.Chemical Formula - Written combination of element symbols that represents the atoms combined in a chemical compound.
In order to write formulas correctly one must follow the capitalization rules for elemental symbols. Making error of capitalizing the second letter of an elements symbol can dramatically alter the meaning of a chemical formula. When we attempt to write a formula it is important to know whether the substance actually exists.
Before writing the chemical formula we need the symbols of elements. The symbols of elements are taken from periodic table.