Alkali metals: Have a corresponding [Noble gas] ns 1

Alkali metals have a corresponding [Noble gas] ns 1 electronic configuration. They occupy the first column of the periodic table. Alkali elements are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Ru), Cesium (Cs) and Francium (Fr), occupying successive periods from first to seven. Francium is a radioactive element with a very low half-life. This article contains information about alkali metals, important properties of alkali metals and the uses of alkali metals in a simple and easy language for a better understanding of the concepts. All alkali metals react with water, with heavier alkali metals more reactive than lighter metals. The elements of the alkali metals include lithium, sodium, potassium, rubidium, cesium, and francium. Alkali metals are the first group of s-block elements that are found on the leftmost side of the periodic table. Alkali metals are the most electropositive elements on the periodic table as they easily lose electrons. These metals formed various useful compounds with halides, oxygen, and sulfur.