Which of the following arrangements does not represent the correct order of the property stated against it?
V2+<Cr2+<Mn2+<Fe2+: Paramagnetic behavior
Ni2+<Co2+<Fe2+<Mn2+: Ionic size
Co3+<Fe3+<Cr3+<Sc3+: Stability in aqueous solution
Sc<Ti<Cr<Mn: Number of oxidation states
A
Sc<Ti<Cr<Mn: Number of oxidation states
B
Co3+<Fe3+<Cr3+<Sc3+: Stability in aqueous solution
C
V2+<Cr2+<Mn2+<Fe2+: Paramagnetic behavior
D
Ni2+<Co2+<Fe2+<Mn2+: Ionic size
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Solution
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Greater is the number of unpaired electrons, greater is the paramagnetic behavior. V=3d34s2;V2+=3d3=3 unpaired electrons
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