STANDARDChemistry-Transition Elements
STANDARD Chemistry Properties of Transition Metals MCQ Question
Type: MCQ-conceptual-Medium
Which of the following arrangements does not represent the correct order of the property stated against it?
A
Sc < Ti < Cr < Mn ; number of oxidation states
B
V²⁺ < Cr²⁺ < Mn²⁺ < Fe²⁺ : paramagnetic behaviour
C
Ni²⁺ < Co²⁺ < Fe²⁺ < Mn²⁺ : ionic size
D
Co³⁺ < Fe³⁺ < Cr³⁺ < Sc³⁺ : stability in aqueous solution
Correct Answer
Option B
Detailed Explanation
Number of unpaired electrons in Fe²⁺ is less than Mn²⁺, so Fe²⁺ is less paramagnetic than Mn²⁺.
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