Variable oxidation states explain why transition metals show rich chemistry, multiple colors, and diverse reactivity. ⚛️ This infographic clearly defines variable oxidation states, showing how the involvement of ns and (n–1)d electrons allows elements to form ions with different charges. It highlights classic transition-metal examples (Fe, Mn, Cr, V) and contrasts them with p-block elements, where the inert pair effect stabilizes lower oxidation states. With factors, real examples, and applicati