Alkalifémek
Alkalifémek, also known as alkali metals, are a group of chemical elements in the periodic table, specifically those in group 1. This group includes lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). Alkalifémek are characterized by their single valence electron in the outermost shell, which makes them highly reactive. They are soft, silvery metals that tarnish quickly when exposed to air due to their reactivity with oxygen and moisture.
The reactivity of alkalifémek increases as you move down the group. Lithium, the least reactive, is used
Alkalifémek react vigorously with water, producing hydrogen gas and the corresponding hydroxide. They also react with