Question

C6H5CHO IN CO= oxidation number

Answer 1

please clarify the question again

Answer 2

Ans. ( D. -4 )

When there is C-C bond ox. no. of C counted as 0

When there is C-H bond ox. no. of C counted as -1, since C is more electronegetive than H

When there is C-O bond ox. no. of C counted as +2, since C is less electronegetive than O