What is the difference between a chemical symbol and a chemical formula?

Neptunium, $"Np"$, has the 93. It is an inner transition metal in the actinide series on .

.........And one refers to the transition metal, elemental cobalt, $Co$, $Z=27$.

Chemical are of chemicals with definite proportions and definite physical properties (I know I am telling you nothing new). Chemical formulae are out attempts to represent these compositions (sometimes, rarely,...

Since 8x3=24 and since 12x3=36 you need to add 6oz of chemical B to have 24oz of chemical A and 36oz of chemical B. Take 1/3 of the total mixture...

Evidently, a Lewis structure depicts the structure of a molecule. The chemical symbols are the atoms, and the lines are the bonds, containing two . In other words......

Physical changes are changes in the formation or state of molecules and atoms. The arrangement of the molecules and atoms is different after the change but the chemical composition of...

At present, in Old Blighty, my room is heated by a chemical reaction; that is by the combustion of natural gas to give carbon dioxide and water. My motor is...

So we take a common ionic material such as calcium fluoride, $CaF_2$. In one formula unit there is the one $Ca^(2+)$ ion, and $2xxF^-$ ions. In one mole of calcium...

Rubidium, an alkali metal, commonly forms $Rb^+$ salts, just as lithium commonly forms $Li^+$ salts. We would assume that the formula of rubidium nitride (if it exists!) is $Rb_3N$.

Elemental oxygen, nitrogen, fluorine, and chlorine, IN FACT ALL THE ELEMENTAL GASES EXCEPT FOR the $"Noble Gases"$ are $"BIMOLECULAR"$ under standard condtions; i.e. $H_2$, $O_2$, $N_2$, $F_2$, and $Cl_2$. That...