MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Let x be the oxidation state of the metal atom in each species. For MnO _4^-, the oxidation state of Mn is calculated as: x + 4(-2) = -1 x = +7 For [ Cr ( CN )_6]^ 3- , the oxidation state of Cr is calculated as: x + 6(-1) = -3 x = +3 For Cr _2 O _3, the oxidation state of Cr is calculated as: 2x + 3(-2) = 0 x = +3 For CrO _2 Cl _2, the oxidation state of Cr is calculated as: x + 2(-2) + 2(-1) = 0 x - 6 = 0 x = +6 Thus, CrO _2 Cl _2 has the metal atom in the +6 oxidation state. Answer: CrO _2 Cl _2