Chemistry
Grade-9
Easy
Question
An ionic compound made of copper (Cu2+) and oxygen would be named as:
- Copper oxygen
- Copper oxide
- Copper oxide
Dicopper oxide
- Copper(II) oxide
Hint:
The oxidation state of copper to be mentioned in bracket.
The correct answer is: Copper(II) oxide
- The ionic compound is made up of Cu2+ and oxygen which has charge -2.
- Copper shows multiple oxidation state and hence its oxidation state has to be mentioned in bracket roman.
- The chemical name is copper(II) oxide.
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