STANDARDChemistry-Coordination Compounds
STANDARD Chemistry Valence Bond Theory MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the following statements is correct for [Mn(CN)₆]³⁻ according to valence bond theory?
A
d²sp³, inner orbital complex, paramagnetic, 2.82 B.M.
B
d²sp³, inner orbital complex, diamagnetic, zero magnetic moment.
C
d²sp³, outer orbital complex, paramagnetic, 3.87 B.M.
D
dsp², outer orbital complex, diamagnetic, zero magnetic moment.
Correct Answer
Option A
Detailed Explanation
In [Mn(CN)₆]³⁻, the oxidation state of Mn is +3, which gives Mn³⁺ = 3d⁴. The complex forms a d²sp³ inner orbital complex with two unpaired electrons, resulting in a paramagnetic nature with a magnetic moment of 2.82 B.M.
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