Predicting the properties of francium
3 marks · EasyFrancium is below caesium in Group 1 of the Periodic Table.
State whether francium is expected to be hard or soft.
State if francium is expected to react faster or slower with water compared to caesium.
State the colour francium is predicted to be when freshly cut.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) Soft
(b) Faster
(c) Silvery (or silver)
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Marking points
B1 (a) · 1 mark · States francium is soft.
B1 (b) · 1 mark · States francium reacts faster with water than caesium.
B1 (c) · 1 mark · States francium is silvery (or silver) when freshly cut.
Worked solution
a) Francium is soft, as alkali metals get softer down the group.
b) Francium reacts faster with water because reactivity increases down the group.
c) Francium would be silvery (or silver) when freshly cut, like other alkali metals.