Chemistry-Oxidation Number
NEET Chemistry Oxidation Number MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about oxidation numbers is correct?
A
The oxidation number of chromium in Cr2O7^2– is +6.
B
The oxidation number of sulfur in SO3^2– is +6.
C
Oxidation numbers can only be assigned to elements in their ionic form.
D
The oxidation number of manganese in MnO4– is +4.
Correct Answer
Option A
Detailed Explanation
The text indicates that the oxidation state of chromium in Cr2O7^2– is +6, while sulfur in SO3^2– has an oxidation state of +4, not +6. Oxidation numbers can be assigned to elements in both ionic and molecular forms, and the oxidation number of manganese in MnO4– is +7, not +4.
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