The atomic ratio between sodium and chlorine in sodium chloride is 1:1, as indicated by its formula NaCl. If the mass ratio is wanted, it is that of the atomic weights of the two elements.
No, they are not the same thing. Elemental sodium (Na) is a bad smelling yellow solid that violently burns up when water touches it. Sodium Chloride (NaCl) is the scientific name for table salt - the...