Which of the following is a characteristic of alkaline earth metals?

Alkaline earth metals are elements in Group 2 of the periodic table, and one of their defining characteristics is that they are indeed less reactive than alkali metals, which are found in Group 1. While both families of metals are highly reactive, the reactivity of alkali metals is greater due to their single valence electron, which they lose easily to form positive ions. Alkaline earth metals, having two valence electrons, also lose electrons to achieve a stable electronic configuration, but this process is less energetically favorable compared to alkali metals. This characteristic sets the stage for their relative reactivity, which is an important aspect of their chemical properties and behavior.