Ionic Compound Charge and Formula Practice

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

Sorry i dont understand the question can you rephase it?

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Are you going to give an example of the plant or?