The reactivity series arranges metals and non-metals in order of their tendency to lose or gain electrons. This series helps predict whether a chemica
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Why are alkali metals so reactive?
Alkali metals (Group 1) have one valence electron in an outermost s-orbital. They easily lose this electron to achieve a stable noble gas configuration, making them extremely reactive. The further down the group, the easier it is to lose the electron, so reactivity increases: Na < K < Rb.
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How is the reactivity series used in industry?
The reactivity series is used to extract metals from their ores through displacement reactions. For example, coke (carbon) displaces many metals, and more reactive metals like aluminum are extracted by electrolysis because no chemical displacement method is strong enough.
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Can a non-metal displace another non-metal?
Yes. More reactive (more electronegative) non-metals can displace less reactive ones. For example, chlorine is more electronegative than iodine: Cl2 + 2KI → 2KCl + I2. Chlorine oxidizes iodide ions to iodine.
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