S Block Elements, Chemistry, Short Notes.
the outermost s-orbital (ns¹). ➭ Alkaline earth metals (Group 2): 2 electrons in the outermost s-orbital (ns²). ➭ Reactivity: Highly reactive due to their tendency to lose electrons and form positively charged ions (cations). Physical Properties: ➭ Alkali metals: Soft, silvery-white, low melting