Predicting the properties of francium
1 mark · NormalWhich statement best predicts what would happen if a small piece of francium was exposed to air at room temperature?
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Correct option: It would tarnish almost instantly.
Common mistakes: Thinking francium is stable in air
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Marking points
A1 · 1 mark · Correct statement: It would tarnish almost instantly.
Worked solution
Francium, like other alkali metals but even more reactive, would tarnish almost instantly in air.