How does reactivity affect how metals are extracted from their ores?

Reactivity plays a crucial role in the extraction of metals from their ores. More reactive metals, such as aluminum and magnesium, cannot be obtained through simple reduction methods and typically require electrolysis due to their strong affinity for oxygen. In contrast, less reactive metals like copper and gold can be extracted through more straightforward processes like reduction with carbon or roasting. Thus, the reactivity of a metal determines the method and energy required for its extraction.