Respuesta :
The molecular formula for perchlorate ion is: ClO₄⁻
The oxidation number of oxygen, O = -2
Let 'x' be the oxidation number of Cl-. Now the net charge on the system is -1
i.e., Cl + 4(O) = -1
(x) + (4)(-2) = -1
x = -1 + 8 = +7
Therefore, the oxidation number of Cl- in perchlorate ion is +7
The oxidation number of Cl in the perchlorate ion is +7
From the question,
We are to determine the oxidation number of chlorine (Cl) in the perchlorate ion
First, we will write the chemical formula of perchlorate ion
The chemical formula of perchlorate ion is ClO₄⁻
Now, the oxidation number of chlorine in the perchlorate ion can be determined as shown below
ClO₄⁻
Cl + (-2×4) = -1
(NOTE: Oxidation number of oxygen, O, is -2)
Then, we get
Cl + (-8) = -1
Cl -8 = -1
Cl = -1 +8
Cl = +7
Hence, the oxidation number of Cl in the perchlorate ion is +7
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