un cation posee un numero de masa igual a 45 y en su configuracion tiene 18 electrones cual es el numero total de particulas fundamentales de dicho cation

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged