Which of the following arrangements does not represent the correct order of the property…

Chemistry · JEE Main · NTA Exams — d- and f-Block Elements

Which of the following arrangements does not represent the correct order of the property stated against it ?

\(\mathrm{V}^{2+}<\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}:\) paramagnetic behaviour
\(\mathrm{Ni}^{2+}<\mathrm{Co}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Mn}^{2+}:\) ionic size
\(\mathrm{Co}^{3+}<\mathrm{Fe}^{3+}<\mathrm{Cr}^{3+}<\mathrm{Sc}^{3+}:\) stability in aqueous solution
\(\mathrm{Sc}<\mathrm{Ti}<\mathrm{Cr}<\mathrm{Mn}:\) number of oxidation states

Answer

(A) V ^ 2+ < Cr ^ 2+ < Mn ^ 2+ < Fe ^ 2+ : paramagnetic behaviour

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