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In the periodic table, consists of hydrogen and the alkali metals. These elements are located in the first vertical column on the far left.

: They all have one electron in their outer shell, making them very unstable. They react vigorously with water to produce alkaline solutions and hydrogen gas. 2. Driving Licenses (UK/GB) group.1

: Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr). In the periodic table, consists of hydrogen and