How many atoms of cobalt are in one formula unit of cobalt (III) oxide? one two three six
2 answers:
<u>Answer:</u> The correct answer is two cobalt atoms.
<u>Explanation:</u>
Cobalt (III) oxide is a compound which is formed by the combination of cobalt and oxygen atoms.
The oxidation state of cobalt in the compound is +3 and the oxidation state of oxygen in the compound is -2.
Thus, by criss-cross method, the oxidation states of the ions becomes the subscipt of the other atom which represents the number of individual atoms in a compound. So, the chemical formula of cobalt (III) oxide becomes
In the given compound, 2 atoms of cobalt are present and 3 atoms of oxygen are there.
Thus, the correct answer is two cobalt atoms.
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It’s copied and pasted from google so make sure to put it in your words :)
It’s copied and pasted from google so make sure to put it in your words :)