Q. The green paramagnetic species formed by heating KMnO₄ at 513 K is
A) KO₂
B) K₂MnO₄
C) Mn₃O₄
D) MnO
Explanation
[Solution from source] 2KMnO₄ → K₂MnO₄ + MnO₂ + O₂ at 513 K. Manganate (MnO₄²⁻) is green and, with Mn(VI) having one unpaired d electron, paramagnetic. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.