Question

"In which of the following does hydrogen not have oxidation number +1?

a. H₂O
b NH₃
c CH₂O
d HCl
e KH

Answer 1

The hydrogen atom does not have an oxidation number of +1 in CH2O.

Step-by-step explanation:

In CH2O, the hydrogen (H) atom does not have an oxidation number of +1. The oxidation number of hydrogen depends on the compound it is in. In CH2O, the oxidation number of hydrogen is -1, because the oxidation number of carbon (C) is +2 and the oxidation number of oxygen (O) is -2. So, the correct answer is c. CH2O.