Which statement best summarizes the importance of Ernest Rutherford’s gold foil experiment?

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

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts