Question

Statement 1:The green manganate is paramagnetic but the purple permanganate is diamagnetic in nature.
Statement 2: $MnO^{2-}_4$ contains one unpaired electron while in $MnO^{-}_4$ all electrons are paired

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation o f the statement 1.
• B. If both Statement 1 and Statement 2 are true but statement 2 is not the correct explanation o f the statement 1.
• C. If Statement 1 is true but Statement 2 is false.
• D. If Statement 1 is false but Statement 2 is true

Answer 1

Answer: (A)

Statement 1: Correct statement and reason is correct explanation of assertion.
Green $\to MnO^{2-}_{4}-\left[Ar\right]^{18} 3d^{1} 4s^{0}$ there is one unpaired electron, so paramagnetic.
Purple $\to MnO^{2-}_{4}-\left[Ar\right]^{18} 3d^{0} 4s^{0}$ here all electrons are paired, so diamagnetic