How does electron configuration help you to predict the activity of metals?

Answer 1

The activity of any element depends on the number of electrons it has in its outer energy level, called valence electrons. Atoms in group one, metals have only one electron in their outer energy level, instead of two so they have incomplete outer energy levels; they are always looking to lose or share their electron with another atom to complete their outer energy level and become more stable. In contrast, the noble gases have complete outer energy levels so they do not interact with other elements. Thus, knowing the electron configuration enables you to determine the valence electrons and predict the reactivity of an element.

Answer 2

Electron configuration determines how easily an atom can lose or gain electrons, which affects its activity as a metal. Metals with a tendency to lose electrons easily (low ionization energy) and achieve a stable electron configuration are more reactive. For example, metals with one or two electrons in their outer shell are more likely to lose those electrons and form positive ions.