Molecular formula :
nature : the material can exist independently and will maintain all of its chemical properties of the smallest particles, the chemical reaction is to participate in the basic unit. Elements from one or several elements of the atom by a certain number, the order and manner in combination. He helium, for example, fluoride as the F-atom molecules, H2 hydrogen, oxygen O2 of diatomic molecules, water H2O for three atomic elements, ammonia NH3 for four atomic elements, CH4 to five atomic elements.
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".