Chemistry - Complete P-block Question with Solution | TestHub

Compound A is P₄O₁₀ (white hygroscopic powder) because it reacts with water to form H₃PO₄. P₄O₁₀ dehydrates HNO₃ to produce B (HPO₃) and C (N₂O₅). C (N₂O₅) reacts with I₂ to form D (I₂O₅) and the brown gas E (NO₂). In HPO₃ (B), I₂O₅ (D), and N₂O₅ (C), the central atoms all have a +5 oxidation state. In E (NO₂), Nitrogen has an oxidation state of +4, making it the correct choice.