Making predictions using the reactivity series
1 mark · EasyRubidium is placed above potassium in the reactivity series. Would you expect rubidium to react more or less vigorously with water compared to potassium? State your answer.
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Rubidium reacts more vigorously with water than potassium.
Also accept: Rubidium reacts more vigorously than potassium.; More vigorously.
Common mistakes: Less vigorously; Same as potassium
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Marking points
B1 · 1 mark · States rubidium reacts more vigorously with water than potassium.
Worked solution
Rubidium is above potassium in the reactivity series, so it is more reactive and reacts more vigorously with water.