Zirconium (Zr) is a metal in Period 5. Its main oxidation state is +4.
The following are all zirconium atoms: .
In terms of numbers of electrons, neutrons and protons, how are these three atoms the same and how are they different?
They are the same because ...
They are different because ...
Above 900°C, zirconium reacts with water to form zirconium(IV) oxide, ZrO2, and hydrogen. Write an equation for this reaction.
Extended Only
It is possible to determine whether zirconium(IV) oxide is acidic, neutral, basic or amphoteric using an acid and an alkali. Complete the table of possible results. If the oxide is predicted to react write ‘R’, if it is predicted not to react write ‘NR’.
if the oxide is | predicted result with hydrochloric acid | predicted result with aqueous sodium hydroxide |
acidic |
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basic |
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neutral |
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amphoteric |
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