What is the oxidation number of C in CH?
Answer and explanation
Correct answer: A. -4
- Step 1: The oxidation numbers in a neutral compound add up to zero (H is +1, O is , K is +1, Na is +1, Cl in a metal chloride is ).
- Step 2: Solving for C gives -4.
Answer
-4.
Why not the others: -3: the total of the oxidation numbers in the formula does not come to zero. -5: the other atoms' oxidation numbers are not balanced correctly. +4: the charges of the other elements are miscounted.
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