Final answer:
The oxidation state of nitrogen in each compound is determined by examining the oxidation states of the other atoms. The correct option is d. +3
Step-by-step explanation:
The oxidation state of nitrogen can be determined by examining the oxidation states of the other atoms in the compound.
In compound a, since the oxidation state of H is +1 and O is -2, the sum of the oxidation states of C, H, and O should be zero. Therefore, the oxidation state of N in this compound is +1.
In compound b, the sum of the oxidation states of N and H should be zero, so the oxidation state of N in this compound is 0.
In compound c, the oxidation state of Rb is +1 and the oxidation state of O is -2, so the sum of the oxidation states of Rb, S, and O should be zero. Therefore, the oxidation state of N in this compound is -1.
In compound d, the oxidation state of Zn is +2 and the oxidation state of C, H, and O should be zero. Therefore, the oxidation state of N in this compound is +3.