Chemistry-Oxidation Number
NEET Chemistry Oxidation Number MCQ Question
Type: MCQ-numerical-Easy-Class 11
What is the change in oxidation number of chromium when dichromate ion (Cr2O7 2–) is reduced to Cr3+?
A
+6 to +3
B
+3 to +6
C
+4 to +3
D
+6 to +2
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, the oxidation state of chromium changes from +6 in Cr2O7 2– to +3 in Cr3+, indicating a decrease of 3.
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