Answer:
In CO, the oxidation number of carbon is +2 and that of oxygen is -2
In H2 the oxidation number of hydrogen is zero
In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2
Step-by-step explanation:
The oxidation number of an element in any compound is defined as the electrical charge that the element appears to have as determined by a set of arbitrary rules. These rules make it possible to calculate the oxidation number of an atom in a compound given the oxidation numbers of other atoms in the same compound.
In CO, the oxidation number of carbon is +2 and that of oxygen is -2
In H2 the oxidation number of hydrogen is zero
In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2