1. The author of the novel 'Half of a Yellow Sun' is Chimamanda Ngozi Adichie. 2. The author of the novel 'Middlesex' is Jeffrey Eugenides. 3. The author of the novel 'Missile Gap' is China Mieville.
NH3, Ammonia is a neutral compound as the individual oxidation numbers elements that make up the compound NH3 are Nitrogen (N) and Hydrogen (H) sum to zero.
We do not speak of the oxidation number of a molecule. We can speak of the oxidation numbers of the individual elements that make up the compound.
Here the oxidation number of Nirogen is -3 and that of Hydrogen is +1.