D And F Block Elements

\(\mathrm{MO}, \mathrm{M}_2 \mathrm{O}_3, \mathrm{MO}_2, \mathrm{M}_2 \mathrm{O}_5\) (Decreasing basic nature)

Sc, V, Cr, Mn (Increasing number of oxidation states)

\(d^5, d^3, d^1, d^4\) (Increasing magnetic moment)

\(\mathrm{Mn}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Cr}^{2+}, \mathrm{Co}^{2+}\) (Decreasing stability)