STANDARDChemistry-Redox Reactions
STANDARD Chemistry Oxidation Numbers MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The oxidation number of Cr in CrO₅ which has the following structure is
A
+4
B
+5
C
+6
D
+3
Correct Answer
Option C
Detailed Explanation
In CrO₅, the oxidation state of Cr is determined by considering the oxidation states of oxygen and the overall charge. The structure shows that Cr is bonded to five oxygen atoms, with each oxygen having an oxidation state of -2. Solving for Cr gives it an oxidation state of +6.
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