Question

compare the reactivity of sodium and potassium?

Answer 1

Answer:

In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .

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The reactivity series.

Element Reaction with water

Potassium. Violently

Sodium Very quickly

Explanation:

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Answer 2

K + H2O --> KOH + H2
Both potassium and sodium possess one electron in their outer shell. Both elements readily give up this unpaired electron and so for this reason are considered very reactive elements. Potassium is placed one period below sodium in period 4. Therefore, potassium has an additional shell of electrons and thus 8 more electrons. This extra shell of electrons shields the attractive force exerted on the outer electron by the nucleus. As a result, less energy is required to remove the outer electron of potassium and so it is more reactive.

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