NEET Chemistry Question (2026) — Solution

Step-by-step solution

When potassium permanganate ( KMnO _4) is heated at 513 K , it decomposes to form potassium manganate, manganese dioxide, and oxygen gas. 2 KMnO _4 513 K K _2 MnO _4 + MnO _2 + O _2 The species K _2 MnO _4 (potassium manganate) is green in color. In K _2 MnO _4, the oxidation state of Mn is +6. The electronic configuration of Mn ^ 6+ is [ Ar ] 3d^1. Since it contains one unpaired electron in the d-orbital, it is paramagnetic in nature. Thus, the green paramagnetic species formed is K _2 MnO _4. Answer: K _2 MnO _4